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      <title>EIGC</title>
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      <div class="title_refTopic" id="xps10_pagetitle">EIGC </div>
      <hr noshade="true">
      <h4 class="refClassification">Complex Eigenvalue Extraction Data </h4>
      <p class="para_refTopic">Defines data needed to perform complex eigenvalue analysis. </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="9.96*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="10.96*">
               <col span="1" width="8.35*">
               <col span="1" width="8.96*">
               <col span="1" width="9.96*">
               <col span="1" width="9.75*">
               <col span="1" width="8.62*">
            </colgroup>
            <thead>
               <tr>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">1 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">2 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">3 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">4 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">5 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">6 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">7 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">8 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">9 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">10 </p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EIGC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">SID </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">METHOD </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">NORM </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">C </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">E </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ND0 </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br><p class="para_refCategory">The following continuation is repeated for each desired search region.  (J = 1 to n, where n is the number of search regions.) </p>
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="976*">
               <col span="1" width="1180*">
               <col span="1" width="1294*">
               <col span="1" width="1198*">
               <col span="1" width="1287*">
               <col span="1" width="701*">
               <col span="1" width="790*">
               <col span="1" width="892*">
               <col span="1" width="867*">
               <col span="1" width="790*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ALPHAAJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">OMEGAAJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ALPHABJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">OMEGABJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">LJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">NEJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">NDJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Alternate Format for Continuation Entry for Block Complex Lanczos: </div>
      <div class="refCategoryContent"><a name="tbl230"></a><table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="972*">
               <col span="1" width="1223*">
               <col span="1" width="1210*">
               <col span="1" width="1145*">
               <col span="1" width="1197*">
               <col span="1" width="1042*">
               <col span="1" width="746*">
               <col span="1" width="862*">
               <col span="1" width="823*">
               <col span="1" width="746*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ALPHAAJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">OMEGAAJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">MBLKSZ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">IBLKSZ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">KSTEPS </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">NJi </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Alternate Format for Continuation Entry for ISRR: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="984*">
               <col span="1" width="1168*">
               <col span="1" width="1241*">
               <col span="1" width="1041*">
               <col span="1" width="1053*">
               <col span="1" width="769*">
               <col span="1" width="1098*">
               <col span="1" width="1052*">
               <col span="1" width="706*">
               <col span="1" width="765*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ALPHACJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">OMEGACJ </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ISRRFLG </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">NJi </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Example: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="9.96*">
               <col span="1" width="11.16*">
               <col span="1" width="11.16*">
               <col span="1" width="11.16*">
               <col span="1" width="10.96*">
               <col span="1" width="8.36*">
               <col span="1" width="8.96*">
               <col span="1" width="9.96*">
               <col span="1" width="9.76*">
               <col span="1" width="8.56*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EIGC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">14 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CLAN </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">+5.6 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">4 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">-5.5 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br><table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="9.96*">
               <col span="1" width="11.16*">
               <col span="1" width="11.16*">
               <col span="1" width="11.16*">
               <col span="1" width="10.96*">
               <col span="1" width="8.36*">
               <col span="1" width="8.96*">
               <col span="1" width="9.96*">
               <col span="1" width="9.76*">
               <col span="1" width="8.56*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EIGC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">15 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ISRR </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">-1.0 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">0.0 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">4 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br><table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="9.96*">
               <col span="1" width="11.16*">
               <col span="1" width="11.16*">
               <col span="1" width="11.16*">
               <col span="1" width="10.96*">
               <col span="1" width="8.36*">
               <col span="1" width="8.96*">
               <col span="1" width="9.96*">
               <col span="1" width="9.76*">
               <col span="1" width="8.56*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EIGC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">16 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">HESS </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">6 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Fields:</div>
      <div class="refCategoryContent">
         <table cellpadding="9" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="15.96*">
               <col span="1" width="21.23*">
               <col span="1" width="62.81*">
            </colgroup>
            <thead>
               <tr>
                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Field </b></p>
                  </th>
                  <th align="left" colspan="2" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Contents </b></p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">SID </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Set identification number.  (Unique Integer&gt;0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">METHOD </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Method of complex eigenvalue extraction.  (Character: &ldquo;INV,&rdquo; &ldquo;HESS,&rdquo; &ldquo;CLAN&rdquo; or &ldquo;ISRR&rdquo;) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">INV </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Inverse power. </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">HESS </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Upper Hessenberg. See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref63658');return(false);">60-2. </a></p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CLAN </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Complex Lanczos.  See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref73474');return(false);">60-10. </a></p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ISRR </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Iterative Schur-Rayleigh-Ritz. See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref21950');return(false);">60-3. </a></p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">NORM </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Method for normalizing eigenvectors.  See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref56155');return(false);">60-9. </a> (Character: &ldquo;MAX&rdquo; or &ldquo;POINT&rdquo;; Default = &ldquo;MAX&rdquo;) and &ldquo;Normalization Options&rdquo; in the <em>NX Nastran Numerical Methods User&rsquo;s Guide</em></p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">MAX </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Normalize the component having the largest magnitude to a unit value for the real part and a zero value for the imaginary part. </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">POINT </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Normalize the component defined in fields 5 and 6 to a unit value for the real part and a zero value for the imaginary part.  The value for NORM defaults to &ldquo;MAX&rdquo; if the magnitude of the defined component is zero.  &ldquo;POINT&rdquo; is available only for METHOD = &ldquo;DET&rdquo;. </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">G </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Grid or scalar point identification number.  Required if and only if NORM = &ldquo;POINT&rdquo;.  (Integer&gt;0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">C </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Component number.  Required if and only if NORM = &ldquo;POINT&rdquo; and G is a geometric grid point.  (0 &le; Integer &le; 6) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">E </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Convergence criterion.  (Real &ge; 0.0.  Default values are: 10<sup class="superscript">-4</sup> for METHOD = &ldquo;INV&rdquo;, 10<sup class="superscript">-15</sup> for METHOD = &ldquo;HESS&rdquo;, E is machine dependent for METHOD = &ldquo;CLAN&rdquo;.) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">MBLKSZ </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Maximum block size. See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref23427');return(false);">60-13. </a> (Default = 7, Real &ge; 0.0) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">IBLKSZ </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Initial block size. (Default = See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref59873');return(false);">60-14</a>, Real &ge; 0.0) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">KSTEPS </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Frequency of solve.  (Default = 5, Integer&gt;0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ISRRFLG </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Used only for ISRR (See remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref13874');return(false);">60-15. </a>) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ALPHACJ </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Used only for ISRR (See remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref13874');return(false);">60-15. </a>) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">OMEGACJ </p>
                  </td>
                  <td align="left" colspan="2" rowspan="1">
                     <p class="para_td">Used only for ISRR (See remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref13874');return(false);">60-15. </a>) 
                     </p>
                  </td>
               </tr>
            </tbody>
         </table><br><a name="tbl236"></a><div class="title_tableWrapper">Table 14-13. Relationship Between METHOD Field and Other Fields </div>
         <table border="1" cellpadding="8" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="19.49*">
               <col span="1" width="19.51*">
               <col span="1" width="21.06*">
               <col span="1" width="20.38*">
               <col span="1" width="19.56*">
            </colgroup>
            <thead>
               <tr>
                  <th align="center" colspan="1" rowspan="2">
                     <p class="para_th"><b class="uiTerm">Field </b></p>
                  </th>
                  <th align="center" colspan="4" rowspan="1">
                     <p class="para_th"><b class="uiTerm">METHOD Field </b></p>
                  </th>
               </tr>
               <tr>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">HESS </b></p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">INV </b></p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">CLAN </b></p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">ISRR </b></p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">NDj (Integer&gt;0) </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Desired number of eigenvectors. (No default) </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Desired number of roots and eigenvectors in j-th search region.(Default = 3*NEj) </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Desired number of roots and eigenvectors to be extracted at j-th shift point.  (No default) </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Desired number of eigenvectors. (No default) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ALPHAAj OMEGAAj Real and imaginary parts of Aj in radians/time (Real). </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">End point Aj of j-th search region in complex plane.  (Default = 0.0) </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">j-th shift point.(Default = 0.0) </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Fields have alternate meaning (See remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref13874');return(false);">60-15. </a>) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ALPHABj OMEGABj Real and imaginary parts of Bj in radians/time (Real). </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">End point Bj of j-th search region in complex plane.  (Default = 0.0) </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">See alternate definition below. </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Lj (Real&gt;0.0) </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Width of j-th search region.  (Default = 1.0) </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">See alternate definition below. </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">NEj  (Integer&gt;0) </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Estimated number of roots in j-th search region.  (Default = 0) </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">MBLKSZ </p>
                     <p class="para_td">For block CLAN only </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Maximum Block SizeDefault = 7 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Not used </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">IBLCKSZ </p>
                     <p class="para_td">For block CLAN only </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Not used </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Initial Block SizeDefault = 2 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Not used </p>
                  </td>
               </tr>
            </tbody>
         </table><br><div class="figure">
            <p align="center"><img align="bottom" src="graphics/bulkde-fig02.gif"></p>
         </div>
         <div class="title_figure">Figure. Sample Search Regions </div>
      </div>
      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">The EIGC entry must be selected in the Case Control Section with the command CMETHOD = SID. Methods of solution are also controlled by SYSTEM(108) on the NASTRAN statements (described in <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/02ref95657_1.html');return(false);">&ldquo;nastran Command and NASTRAN Statement&rdquo; </a>). 
               </p>
               <table border="1" cellpadding="7" width="100%" align="center">
                  <colgroup span="1">
                     <col span="1" width="23.18*">
                     <col span="1" width="76.82*">
                  </colgroup>
                  <thead>
                     <tr>
                        <th align="center" colspan="1" rowspan="1">
                           <p class="para_th"><b class="uiTerm">SYSTEM(108) </b></p>
                        </th>
                        <th align="center" colspan="1" rowspan="1">
                           <p class="para_th"><b class="uiTerm">Specification </b></p>
                        </th>
                     </tr>
                  </thead>
                  <tbody>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">0 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">QZ HESS method or CLAN block Lanczos, as selected by EIGC entry or equivalent PARAM input. Default value. </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">1(default) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Force Householder QR (Hessenberg with spill, mass matrix must be nonsingular) </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Force old single vector complex Lanczos </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">4 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Force new block complex Lanczos </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">8 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Debugging output for Lanczos methods </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">16 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Turn off block reduction in block complex Lanczos </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">32 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Turn off block augmentation in block complex Lanczos </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">64 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Turn off full orthogonality in block complex Lanczos </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">128 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Turn off preprocessing of initial vectors in block complex Lanczos </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">256 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Force LR method (Hessenberg, no spill, mass matrix must be invertible) </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">512 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Force QZ method </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">65536 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Use semi-algebraic sort on imaginary part of roots (pre-V70.6 sort) </p>
                        </td>
                     </tr>
                  </tbody>
               </table><br><p class="para_item">The word &ldquo;force&rdquo; above implies that the method selected by the system cell will be used even when another method has been selected on an EIGC entry. Sums of these values will produce two or more actions at once, when feasible. As the numbers get larger, the function is more developer-oriented than user-oriented. </p>
            </li>
            <li><a name="ref63658"></a><p class="para_item">The &ldquo;HESS&rdquo; method is generally more reliable and economical for small and moderate-size problems.  It computes all eigenvalues and ND eigenvectors. </p>
            </li>
            <li><a name="ref21950"></a><p class="para_item">The &ldquo;ISRR&rdquo; method works well on sparse matrices, confines the search region to a circle centered on the origin of the complex plane, and provides some reliability that all modes within the circle have been found. </p>
            </li>
            <li>
               <p class="para_item">The EIGC entry may or may not require continuations as noted below. </p>
               <ul>
                  <li>
                     <p class="para_item">For the &ldquo;HESS&rdquo; method, continuations are not required; and their contents are ignored when present, except for ND1.  However, it is recommended that continuations are not used. </p>
                  </li>
                  <li>
                     <p class="para_item">For the &ldquo;CLAN&rdquo; method when the continuation entry is not used a shift is calculated automatically. When a shift is input on the first continuation entry it is used as the initial shift. Only one shift is used. Data on other continuation entries is ignored. </p>
                  </li>
                  <li>
                     <p class="para_item">For METHOD = &ldquo;INV&rdquo;, each continuation defines a rectangular search region.  Any number of regions may be used and they may overlap.  Roots in overlapping regions will not be extracted more than once. </p>
                  </li>
                  <li>
                     <p class="para_item">For METHOD = &ldquo;ISRR&rdquo; continuation, see Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_52.html#ref13874');return(false);">60-15. </a></p>
                  </li>
                  <li>
                     <p class="para_item">For all methods, if no continuation is present, then ND0 must be specified on the first entry.  If a continuation is present, then NDj must be specified on the continuation and not on the first entry. </p>
                  </li>
               </ul>
            </li>
            <li>
               <p class="para_item">The units of ALPHAAJ, OMEGAAJ, ALPHABJ, and OMEGABJ are radians per unit time. </p>
            </li>
            <li>
               <p class="para_item">See <em>The NASTRAN Theoretical Manual </em>for a discussion of convergence criteria and the search procedure with the INV method. 
               </p>
            </li>
            <li>
               <p class="para_item">DIAG 12 prints diagnostics for the inverse power method, the complex Lanczos method, the QZ HESS method and the ISRR method. </p>
            </li>
            <li>
               <p class="para_item">If METHOD = &ldquo;HESS&rdquo; and the LR or QR methods (non-default methods) are selected by system cell 108 the mass matrix must be nonsingular.  The method does not require nonsingular mass matrix. </p>
            </li>
            <li><a name="ref56155"></a><p class="para_item">The normalized eigenvectors may be output with the SDISPLACEMENT and/or DISPLACEMENT Case Control commands. </p>
            </li>
            <li><a name="ref73474"></a><p class="para_item">When using METHOD = CLAN, the following should be noted.  The modern CLAN method (default for METHOD entry of CLAN) has been enhanced to include a block complex Lanczos approach.  This method is more reliable and will not accept inaccurate roots which the old method had a tendency to do.  Thus, given the same input, the new method may often accept fewer roots.  For continuity the old method has been maintained and may be selected by setting SYSTEM(108). </p>
            </li>
            <li>
               <p class="para_item">The SVD method is provided for DMAP applications. If used in solution 107 or 110, and mass or damping terms are present, a user fatal exit is taken. The SVD operation decomposes the input stiffness matrix K into the factors U, S, and V. U and V are collections of vectors of orthogonal functions. S is a rectangular matrix with terms on the diagonal of its left partition. The factors satisfy the equation K = U*S*V&rsquo;, where &ldquo; &rsquo; &rdquo; implies complex conjugate transpose. The ND1 value has a meaning for the SVD functions which differs from eigensolution. </p>
               <table border="1" cellpadding="8" width="100%" align="center">
                  <colgroup span="1">
                     <col span="1" width="28.22*">
                     <col span="1" width="71.78*">
                  </colgroup>
                  <thead>
                     <tr>
                        <th align="center" colspan="1" rowspan="1">
                           <p class="para_th"><b class="uiTerm">ND1 </b></p>
                        </th>
                        <th align="center" colspan="1" rowspan="1">
                           <p class="para_th"><b class="uiTerm">OUTPUT </b></p>
                        </th>
                     </tr>
                  </thead>
                  <tbody>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">&gt;0 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">All vectors of U and V are output. </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">=0 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">U and V are returned in a purged state. </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">&lt;0 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">S is returned as a square matrix whose number of columns is equal to the minimum number of rows or columns of the input matrix. U and V are truncated to be commensurate with S. This is a method to reduce the costs of solving very rectangular input matrices by providing a partial solution for the most interesting vectors. </p>
                        </td>
                     </tr>
                  </tbody>
               </table><br></li>
            <li>
               <p class="para_item">For DMAP applications there are input parameters, not present in the solution sequences, that may be used to replace the function of the EIGC and CMETHOD entries. </p>
            </li>
            <li><a name="ref23427"></a><p class="para_item">The MBLKSZ and IBKLSZ parameters are integers in concept, but must be input at real numbers (that is, with a decimal point). They represent maximum sizes, and may be reduced internally for small size problems. </p>
            </li>
            <li><a name="ref59873"></a><p class="para_item">The initial block size (IBKLSZ) default is as follows: </p>
               <p class="para_item">If N&lt;1000, IBKLSZ = 1. </p>
               <p class="para_item">If N&lt;50,000, IBKLSZ = 2. </p>
               <p class="para_item">If N&lt;100,000, IBKLSZ = 4. </p>
            </li>
            <li><a name="ref13874"></a><p class="para_item">Using the METHOD=ISRR alternate continuation card, field 7 (ISRRFLG) can be used to define the following instructions; </p>
               <table border="1" cellpadding="8" width="100%" align="center">
                  <colgroup span="1">
                     <col span="1" width="23.18*">
                     <col span="1" width="76.82*">
                  </colgroup>
                  <thead>
                     <tr>
                        <th align="center" colspan="1" rowspan="1">
                           <p class="para_th">ISRRFLG </p>
                        </th>
                        <th align="center" colspan="1" rowspan="1">
                           <p class="para_th">Instruction </p>
                        </th>
                     </tr>
                  </thead>
                  <tbody>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Reserves fields 2 (ALPHACJ) and 3 (OMEGACJ) for a user supplied shift. Shift does not redefine search region, only used during decomposition to avoid a singularity. The use of the shift is recommended for better performance. </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Forces the out-of-core path in the code. </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">4 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Overrides system cell 405. </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">8 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Forces balanced iteration for real unsymmetrical problems only. </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">16 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Forces generation of starting vectors for quadratic problems from the values found for the linear case when damping is ignored. In all other cases, the starting vectors are randomly generated. </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="center" colspan="1" rowspan="1">
                           <p class="para_td">M * 32 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Forces the maximum size of the subspace to M vectors. </p>
                        </td>
                     </tr>
                  </tbody>
               </table><br></li>
         </ol>
         <p class="para_refCategory">The above ISRRFLG values may be added to obtain a combination of settings. For example ISRRFLG = 323 would indicate options &ldquo;1&rdquo;, &ldquo;2&rdquo; and a maximum subspace of 10 vectors (1 + 2 + (10*32) = 323). </p>
      </div>
      <div class="title_refCategory">Alternate EIGC Bulk Data Entry </div>
      <div class="refCategoryContent">
         <p class="para_refCategory">The following alternate format is valid for all methods except inverse power: </p>
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="9.96*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="10.96*">
               <col span="1" width="8.35*">
               <col span="1" width="8.96*">
               <col span="1" width="9.96*">
               <col span="1" width="9.75*">
               <col span="1" width="8.62*">
            </colgroup>
            <thead>
               <tr>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">1 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">2 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">3 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">4 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">5 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">6 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">7 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">8 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">9 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">10 </p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EIGC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">SID </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">METHOD </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">NORM </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">C </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">E </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ND0 </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="8" rowspan="1">
                     <p class="para_td">KEYWORD1=&lt;value&gt; KEYWORD2=&lt;value&gt; KEYWORD3=&lt;value&gt; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br><p class="para_refCategory">where KEYWORD may be any of the parameters from the original entry except SID, as well as: </p>
         <table cellpadding="8" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="19.47*">
               <col span="1" width="80.53*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">NDj </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Number of desired roots at shift j. (Integer&gt;0). </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">SHIFTRj </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">The real part of shift j. (Real) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">SHIFTIj </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">The imaginary part of shift j. (Real) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">KSTEPSj </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Block tridiagonal solution frequency at shift j; (only block Lanczos).(Integer&gt;0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">MBLKSZj </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Maximum block size at shift j; (only block Lanczos). (Integer&gt;0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">IBLKSZj </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Initial block size at shift j; (only block Lanczos). (Integer&gt;0) </p>
                  </td>
               </tr>
            </tbody>
         </table><br><table border="0">
            <tr>
               <td valign="top" align="left"><img align="left" src="../graphics/note.gif" alt="Note" title="Note"></td>
               <td valign="bottom" align="left" width="100%">
                  <div class="para_note">
                     <p class="para_note_body">In the parameters above, the value of j ranges from 1 to 10. </p>
                  </div>
               </td>
            </tr>
         </table>
         <p class="para_refCategory">Example: </p>
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="9.96*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="10.96*">
               <col span="1" width="8.35*">
               <col span="1" width="8.96*">
               <col span="1" width="9.96*">
               <col span="1" width="9.75*">
               <col span="1" width="8.62*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EIGC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">1 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CLAN </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="8" rowspan="1">
                     <p class="para_td">eps=1.E-12, nd1=12, shiftr1=0, shifti1=2.4E2 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br><table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="9.96*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="10.96*">
               <col span="1" width="8.35*">
               <col span="1" width="8.96*">
               <col span="1" width="9.96*">
               <col span="1" width="9.75*">
               <col span="1" width="8.62*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EIGC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">2 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">HESS </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="8" rowspan="1">
                     <p class="para_td">ND1=10 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br><table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="9.96*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="11.15*">
               <col span="1" width="10.96*">
               <col span="1" width="8.35*">
               <col span="1" width="8.96*">
               <col span="1" width="9.96*">
               <col span="1" width="9.75*">
               <col span="1" width="8.62*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EIGC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CLAN </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="8" rowspan="1">
                     <p class="para_td">shiftr1=0.0, shifti1=20., nd1=5, iblksz1=2, mblksz1=5 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="8" rowspan="1">
                     <p class="para_td">shiftr2=0.0, shifti2=50., nd2=5, iblksz2=2, mblksz2=5 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="8" rowspan="1">
                     <p class="para_td">shiftr3=0.0, shifti3=100., nd3=5, iblksz3=1, mblksz3=5 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Remarks about alternate entry options: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">The first of the keyword-driven continuation entry must be blank. </p>
            </li>
            <li>
               <p class="para_item">If any of the parameters METHOD, NORM, G, C, EPS, or ND1 are specified on the continuation entry, the corresponding field on the original entry must be blank. </p>
            </li>
            <li>
               <p class="para_item">A maximum of 10 shifts may be specified. </p>
            </li>
         </ol>
      </div>
   </body>
</html>