Motivic Poincaré series, toric singularities and logarithmic jacobian ideals

Details Motivic Poincaré series, toric singularities and logarithmic jacobian ideals Motivic Poincaré series, toric singularities and logarithmic jacobian ideals

2010-11-16

arxiv.org/abs/1011.3697v1

Mathematics

Algebraic Geometry

to appear in Journal of Algebraic Geometry

Scientific paper

The geometric motivic Poincar\'e series of a variety, which was introduced by Denef and Loeser, takes into account the classes in the Grothendieck ring of the sequence of jets of arcs in the variety. Denef and Loeser proved that this series has a rational form. We describe it in the case of an affine toric variety of arbitrary dimension. The result, which provides an explicit set of candidate poles, is expressed in terms of the sequence of Newton polyhedra of certain monomial ideals, which we call logarithmic jacobian ideals, associated to the modules of differential forms with logarithmic poles outside the torus of the toric variety.

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