The cycle classes of divisorial Maroni loci

Gerard van der Geer; Alexis Kouvidakis

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arXiv · 1509.08598

The cycle classes of divisorial Maroni loci

Gerard van der Geer·Alexis Kouvidakis

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Abstract

We determine the cycle classes of effective divisors in the compactified Hurwitz spaces of curves of genus g with a linear system of degree d that extend the Maroni divisors on the open Hurwitz space. Our approach uses Chern classes associated to a global-to-local evaluation map of a vector bundle over a generic $P^1$-bundle over the Hurwitz space.

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Gerard van der Geer, Alexis Kouvidakis. 2015-09-29. The cycle classes of divisorial Maroni loci. https://arxiv.org/abs/1509.08598

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