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Coding
Deformations
Equidim Part
Existence
Finite Groups
Flatness
Genus
Hilbert Series
Membership
Monodromy
Normalization
Primdec
Puiseux
Plane Curves
Solving
Space Curves
Spectrum
Monodromy
Task: Compute the monodromy of an isolated hypersurface singularity using the Brieskorn algorithm.

Input: Polynomial f in a series ring defining an isolated hypersurface singularity.
Output: Matrix M such that is a monodromy matrix of the singularity f.

LIB "gaussman.lib";
LIB "linalg.lib";

ring R=0,(x,y),ds;
poly f=x5+y5+x2y2; // A'Campo example

matrix M=monodromy(f);
print(jordanform(M));

Note that the monodromy matrix has a Jordan block of size 2.

print(jordan(M));

Lille, 08-07-02 http://www.singular.uni-kl.de