| #### D.6.7.1 classifyCeq Procedure from library `classifyceq.lib` (see classifyceq_lib). Usage: classifyCeq(f); f poly Return: string including the Tjurina number of f and its type in the classification of Greuel and Kroening Example:
    LIB "classifyceq.lib";
    ring R=3,(x,y,z,u,v,w),ds;
    classifyCeq(-x2+xy+y2+xz-yz-z2+w2+u3+v4);
    ==> The given function defines a simple singularity.
    ==> The tjurina number is 9.
    ==> E^0[6]:x^3+y^4

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