primadec

You need to install ox_asir server to use this function. (ox_asir function)
[ ii ] primadec [[q1 p1] [q2 p2] ... ] 
 array of poly ii; array of poly q1, p1, q2, p2 ...;
 q1, q2, ... are primary components of the primary ideal decomposition
 of the ideal generated by << ii >>.
  
[ ii v ] primadec [[q1 p1] [q2 p2] ... ] 
 array of poly or string ii; array of string v; array of poly q1, p1, q2, p2 ...;
<< v >> is an array of independent variables.
  
[ ii v ] primadec [[q1 p1] [q2 p2] ... ] 
 array of poly or string ii; array of string v; array of poly q1, p1, q2, p2 ...;
 v  is a string of variables separated by , 
  
Example:  [(x,y) ring_of_polynomials 0] define_ring
          [ [(x^2-1). (x y).] ] primadec pmat ;
  
Example:  [ [(x^2-1) (x y)] [(x) (y)]] primadec pmat ;
  
If you interrupted the computation by typing ctrl-C, type in 
   oxasir.ccc oxreset  ; 
to interrupt the ox_asir server.
  
This function requires plugins cmo, socket and ox_asir server. cf.oxasir