Non-tautological cycles on moduli spaces of smooth pointed curves
Algebraic Geometry
2024-10-08 v1
Abstract
In recent work by Arena, Canning, Clader, Haburcak, Li, Mok, and Tamborini it was proven that for infinitely many values of and , there exist non-tautological algebraic cohomology classes on the moduli space of smooth genus , -pointed curves. Here we show how a generalization of their technique allows to cover most of the remaining cases, proving the existence of non-tautological algebraic cohomology classes on the moduli space for all but finitely many values of and .
Cite
@article{arxiv.2410.04400,
title = {Non-tautological cycles on moduli spaces of smooth pointed curves},
author = {Dario Faro and Carolina Tamborini},
journal= {arXiv preprint arXiv:2410.04400},
year = {2024}
}