G. van der Geer

activity

19942026

most citedThe Chow Ring of the Moduli Space of Abelian Threefolds

32 citations · 139 across the 27 of their papers we have counts for

collaborators

Showing 2015Show all

3 papers · 1 filter

math.AG2015

A stratification on the moduli of K3 surfaces in positive characteristic

Gerard van der Geer

We review the results on the cycle classes of the strata defined by the height and the Artin invariant on the moduli of K3 surfaces in positive characteristic obtained in joint wor…

math.AG2015

Divisors on Hurwitz spaces: an appendix to 'The cycle classes of divisorial Maroni loci'

Gerard van der Geer, Alexis Kouvidakis

The Maroni stratification on the Hurwitz space of degree $d$ covers of genus $g$ has a stratum that is a divisor only if $d - 1$ divides $g$ . Here we construct a stratification on th…

math.AG2015

The cycle classes of divisorial Maroni loci

Gerard van der Geer, Alexis Kouvidakis

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…