def dmp_gff_list(f, u, K):
 if (not u):
  return dup_gff_list(f, K)
 else:
  raise MultivariatePolynomialError(f)

def dmp_gff_list ( f , u , K ) : if ( not u ) : return dup_gff_list ( f , K ) else : raise MultivariatePolynomialError ( f )
compute greatest factorial factorization of f in k[x] .