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7.7.8.0. lpIsPrime
Procedure from library fpaprops.lib (see fpaprops_lib).
- Usage:
- lpIsPrime(G); G an ideal in a Letterplace ring
- Return:
- boolean
- Purpose:
- Check whether R/<G> is prime, where R is the basering
- Assume:
- - basering is a Letterplace ring
- G is a Groebner basis
Example:
| LIB "fpaprops.lib";
ring r = 0,(x,y),dp;
def R = makeLetterplaceRing(5);
setring R;
ideal G = x(1)*x(2), y(1)*y(2); // K<x,y>/<xx,yy> is prime
lpIsPrime(G);
==> 1
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