Top weight cohomology of moduli spaces of Riemann surfaces and handlebodies

DOI: 10.4171/jems/1623 Publication Date: 2025-03-10T12:01:27Z
ABSTRACT
We show that a certain locus inside the moduli space \mathcal{M}_{g} of hyperbolic surfaces, given by surfaces with “sufficiently many” short geodesics, is classifying handlebody mapping class group. A consequence construction top weight cohomology , studied Chan–Galatius–Payne, maps injectively into
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