Quadratic vanishing cycles, reduction curves and reduction of the monodromy group of plane curve singularities
Norbert A'Campo
math.AGarXiv:math/0006124
Abstract
The geometric monodromy of a plane curve singularity is a quasi-finite diffeomorphism. In this paper we locate the reduction curves of the geometric monodromy and the quadratic vanishing cycles of the singularity. An application to the geometric monodromy group is given.
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