!goto $wims_read_parm

:def
title=Characteristic polynomial
synonyme=charpoly
input=square_matrix
!exit

:proc
result=!exec pari charpoly([$mat])
!exit

:output
!set pars=$[max(min($rows,10),1)]
<center>
<table border=0 cellpadding=2>
!for i=1 to $rows
 !set l=!line $i of $formula
 <tr>
 !if $i=1
  <td nowrap rowspan=$rows>A = $(m_leftpar$pars)
 !endif
 !for j=1 to $cols
  !set k=!item $j of $l
  <td nowrap align=center>$k
 !next j
 !if $i=1
  <td nowrap rowspan=$rows>$(m_rightpar$pars)
 !endif
!next i

</table></center> <p>
The characteristic polynomial of A is
!htmlmath $result
 .

!exit

