|  |  D.15.1.5 arnoldCorank Procedure from libraryarnoldclassify.lib(see  arnoldclassify_lib).
 
Example:Usage:
arnoldCorank(f); f poly
Assume:
basering is local, f in maxideal(2) has isolated critical point at 0
Return:
corank of the Hessian matrix of f
 |  | LIB "arnoldclassify.lib";
ring r=0,(x,y,z),ds;
poly f=(x2+3y-2z)^2+xyz-(x-y3+x2*z3)^3;
arnoldCorank(f);
==> 2
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