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7.7.15.0. isCommutative
Procedure from librarynctools.lib (see nctools_lib).
- Usage:
- isCommutative();
- Return:
- int, 1 if basering is commutative, or 0 otherwise
- Purpose:
- check whether basering is commutative
LIB "nctools.lib"; ring r = 0,(x,y),dp; isCommutative(); ==> 1 def D = Weyl(); setring D; isCommutative(); ==> 0 setring r; def R = nc_algebra(1,0); setring R; isCommutative(); ==> 1 |