English

Pullbacks of Brill-Noether Classes Under Abel-Jacobi Sections

Algebraic Geometry 2023-01-02 v1

Abstract

We prove that the pullbacks of the virtual fundamental classes of the Brill-Noether loci under any Abel-Jacobi section lie in the tautological ring of the moduli space of stable curves. This resolves a conjecture of Pagani, Ricolfi and van Zelm, and is part of a broader program to understand the logarithmic intersection theory of \Mgn\Mgn.

Keywords

Cite

@article{arxiv.2212.14368,
  title  = {Pullbacks of Brill-Noether Classes Under Abel-Jacobi Sections},
  author = {Sam Molcho},
  journal= {arXiv preprint arXiv:2212.14368},
  year   = {2023}
}

Comments

21 pages. Any comments or suggestions welcome

R2 v1 2026-06-28T07:56:09.919Z