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D.6.11.4 monodromyB

Procedure from library mondromy.lib (see mondromy_lib).

Usage:
monodromyB(f[,opt]); f poly, opt int

Assume:
The polynomial f in a series ring (local ordering) defines an isolated hypersurface singularity.

Return:
The procedure returns a residue matrix M of the meromorphic Gauss-Manin connection of the singularity defined by f or an empty matrix if the assumptions are not fulfilled. If opt=0 (default), exp(-2*pi*i*M) is a monodromy matrix of f, else, only the characteristic polynomial of exp(-2*pi*i*M) coincides with the characteristic polynomial of the monodromy of f.

Display:
The procedure displays more comments for higher printlevel.

Example:
 


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