is_unit()

bool SchurRing2::is_unit ( const ring_elem f ) const

virtual

Implements Ring.

Definition at line 240 of file schur2.cpp.

{
  const schur_poly *g = f.get_schur_poly();
  if (g->size() != 1) return false;
  return (g->monoms.size() == 1) && (coefficientRing->is_unit(g->coeffs[0]));
}

References coefficientRing, ring_elem::get_schur_poly(), and schur_poly::size().