lass="cmr-12">8</span><!--tex4ht:ref: tab:p_smoother_1 --></a><span 
class="cmr-12">.</span>
     </li>
     <li 
  class="enumerate" id="x17-16008x4"><span 
class="cmti-12">Build the preconditioner for a given matrix</span><span 
class="cmr-12">. If the selected preconditioner is</span>
     <span 
class="cmr-12">multilevel, then two steps must be performed, as specified next.</span>
          <ol  class="enumerate2" >
          <li 
  class="enumerate" id="x17-16009x0"><span 
class="cmti-12">Build the agg