7.5.20.0. isNC

Usage:

isNC();

Purpose:

check whether a basering is commutative or not

Return:

int, 1 if basering is noncommutative and 0 otherwise

LIB "nctools.lib";
def a = makeWeyl(2);
setring a;
isNC();
==> 1
kill a;
ring r = 17,(x(1..7)),dp;
isNC();
==> 0
kill r;