Singular Manual: jordanVecField

| #### D.15.23.3 jordanVecField Procedure from library `VecField.lib` (see VecField_lib). Usage: jordanVecField(VecField V) Return: new vecfield W in coordinates s.t. W.lin is in Jordan normal form. Assume: eigenvalues of V.lin in basefield. Example:
    LIB "VecField.lib";
    ring r = 0, (x, y, z),ds;
    vector v = [-1,-1,-1];
    VecField V = v;
    V.precision = 4;
    map phi = r, x-2y2+z3,2y+y3+z,z;
    VecField W = changeCoordinates(V,phi);
    VecField X = jordanVecField(W);

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