The cycle classes of divisorial Maroni loci

@article{Geer2015TheCC,
  title={The cycle classes of divisorial Maroni loci},
  author={Gerard van der Geer and Alexis Kouvidakis},
  journal={arXiv: Algebraic Geometry},
  year={2015}
}
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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