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D.2.2.22 factorH
Procedure from library general.lib (see general_lib).
- Usage:
- factorH(p) p poly
- Return:
- factorize(p)
- Note:
- changes variables to become the last variable the principal
one in the multivariate factorization and factorizes then
the polynomial
Example:
| LIB "general.lib";
system("random",992851144);
ring r=32003,(x,y,z,w,t),lp;
poly p=y2w9+yz7t-yz5w4-z2w4t4-w8t3;
factorize(p); //fast
system("random",992851262);
//factorize(p); //slow
system("random",992851262);
factorH(p);
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