The integral Chow rings of the stacks of hyperelliptic Weierstrass points

Published 1 Aug 2022 in math.AG | (2208.00556v2)

Abstract: We compute the integral Chow rings of the stacks ${\mathcal H}_{g,n}^w$ parametrizing hyperelliptic curves with $n$ marked Weierstrass points. We prove that the integral Chow rings of each of these stacks is generated as an algebra by any of the $\Psi$-classes and that all relations live in degree one.

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