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D.5.4.4 gamma

Procedure from library gaussman.lib (see gaussman_lib).

Usage:
gamma(vfiltration(f,0)); poly f

Assume:
basering has local ordering, f has isolated singularity at 0

Return:
number g: C. Hertling's gamma invariant

Example:
 
LIB "gaussman.lib";
ring R=0,(x,y),ds;
poly f=x5+x2y2+y5;
gamma(vfiltration(f,0));
==> 1/240

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            User manual for Singular version 2-0-0, February 2001, generated by texi2html.