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D.2.11.18 hasCommutativeVars
Procedure from library ring.lib (see ring_lib).
- Usage:
- hasCommutativeVars ( rng );
- Return:
- 1 if rng is a commutative polynomial ring, 0 otherwise.
Example:
| LIB "ring.lib";
ring r=0,(x,y,z),dp;
hasCommutativeVars(r);
==> 1
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