Cohomology rings of moduli of point configurations on the projective line

Franzen, Hans; Reineke, Markus

doi:10.1090/proc/14024

Cohomology rings of moduli of point configurations on the projective line
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by Hans Franzen and Markus Reineke PDF

Proc. Amer. Math. Soc. 146 (2018), 2327-2341 Request permission

Abstract:

We describe the Chow rings of moduli spaces of ordered configurations of points on the projective line for arbitrary (sufficiently generic) stabilities. As an application, we exhibit such a moduli space admitting two small desingularizations with non-isomorphic cohomology rings.

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