|
 |
 |
 |
 |
 |
 |
 |
 |
 |
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);
→ [1]:
→ _[1]=1
→ _[2]=y2w9+yz7t-yz5w4-z2w4t4-w8t3
→ [2]:
→ 1,1
|