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D.6.4.1 basicinvariants

Procedure from library classify.lib (see classify_lib).

Usage:
basicinvariants(f); f = poly

Compute:
Compute basic invariants of f: an upper bound d for the determinacy, the milnor number mu and the corank c of f

Return:
intvec: d, mu, c

Example:
 
LIB "classify.lib";
ring r=0,(x,y,z),ds;
basicinvariants((x2+3y-2z)^2+xyz-(x-y3+x2*z3)^3);
==> 5,4,2


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