Singular Manual: determineArnoldType

| #### D.15.2.31 determineArnoldType Procedure from library `arnold.lib` (see arnold_lib). Usage: determineArnoldType(N); N NormalForm which was created using @ref(determineNormalForm), with the field N.modality<=2 Return: a NormalForm N in which the Arnold classification of N.phi.sourcegerm is stored in N.ArnoldType Example:
    LIB "arnold.lib";
    ring R=0,(x,y),ds;
    poly g = x^4+2*x^2*y^2+y^4+x^(10)+y^(10);
    poly phix = x+y^2+x^2+x*y+x^2*y+x*y^3;
    poly phiy = y+y^2+2*x^2+x*y+y*x^2+y^2*x+x*y^4;
    map phi = R,phix,phiy;
    g=phi(g);
    Poly F = makePoly(g);
    NormalForm N;
    N = determineNormalForm(F);
    N = determineArnoldType(N);
    N.ArnoldType;
    ==> Y[16,16]

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