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D.12.7.1 isuni
Procedure from libraryrootsur.lib (see rootsur_lib).
- Usage:
- isuni(p); poly p;
- Return:
- poly: if p is a univariate polynomial, it returns the variable. If
not, zero.
LIB "rootsur.lib"; ring r = 0,(x,y),dp; poly p = 6x7-3x2+2x-15/7; isuni(p); ==> x isuni(p*y); ==> 0 |