(self)
return tuple(minors)
Computes principal minors using Berkowitz method.

        See Also
        ========

        berkowitz
Computes principal minors using Berkowitz method.
Computes principal minors using Berkowitz method .
def berkowitz_minors(self):
        """Computes principal minors using Berkowitz method.

        See Also
        ========

        berkowitz
        """
        sign, minors = S.NegativeOne, []

        for poly in self.berkowitz():
            minors.append(sign*poly[-1])
            sign = -sign

        return tuple(minors)
def berkowitz_minors ( self ) : sign , minors = S . NegativeOne , [ ] for poly in self . berkowitz ( ) : minors . append ( sign * poly [ - 1 ] ) sign = - sign return tuple ( minors )