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D.6.18.1 signatureBrieskorn

Procedure from library surfacesignature.lib (see surfacesignature_lib).

Usage:
signatureBrieskorn(a1,a2,a3); a1,a2,a3 = integers

Return:
signature of Brieskorn singularity x^a1+y^a2+z^a3

Example:
 
LIB "surfacesignature.lib";
ring R = 0,x,dp;
signatureBrieskorn(11,3,5);
==> -48

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