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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);