FA-modules of holomorphic forms on $\overline{\mathcal{M}}_{g,n}$

Fuente: arXiv
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Main Authors: Canning, Samir, Larson, Hannah, Payne, Sam, Willwacher, Thomas
Format: Preprint
Published: 2025
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author Canning, Samir
Larson, Hannah
Payne, Sam
Willwacher, Thomas
author_facet Canning, Samir
Larson, Hannah
Payne, Sam
Willwacher, Thomas
contents For fixed genus g and varying finite marking set A, the gluing and forgetful maps give the spaces of holomorphic forms on the moduli space of stable A-marked curves of genus g has the structure of an FA-module, i.e., a functor from the category of finite sets to vector spaces. We prove that the resulting FA-modules of holomorphic k-forms are simple, for k less than or equal to 18, whenever they are nonzero. Conditional upon the conjectured vanishing of holomorphic 19-forms and 20-forms in genus 3, for 15 and 16 marked points, respectively, this extends to k less than or equal to 20.
format Preprint
id arxiv_https___arxiv_org_abs_2509_08774
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle FA-modules of holomorphic forms on $\overline{\mathcal{M}}_{g,n}$
Canning, Samir
Larson, Hannah
Payne, Sam
Willwacher, Thomas
Algebraic Geometry
14H10, 14H15, 14J15, 18G85, 32G15
For fixed genus g and varying finite marking set A, the gluing and forgetful maps give the spaces of holomorphic forms on the moduli space of stable A-marked curves of genus g has the structure of an FA-module, i.e., a functor from the category of finite sets to vector spaces. We prove that the resulting FA-modules of holomorphic k-forms are simple, for k less than or equal to 18, whenever they are nonzero. Conditional upon the conjectured vanishing of holomorphic 19-forms and 20-forms in genus 3, for 15 and 16 marked points, respectively, this extends to k less than or equal to 20.
title FA-modules of holomorphic forms on $\overline{\mathcal{M}}_{g,n}$
topic Algebraic Geometry
14H10, 14H15, 14J15, 18G85, 32G15
url https://arxiv.org/abs/2509.08774