Enumerativity of virtual Tevelev degrees
Abstract
Tevelev degrees in Gromov-Witten theory are defined whenever there are virtually a finite number of genus maps of fixed complex structure in a given curve class through general points of a target variety . These virtual Tevelev degrees often have much simpler structure than general Gromov-Witten invariants. We explore here the question of the enumerativity of such counts in the asymptotic range for large curve class . A simple speculation is that for all Fano , the virtual Tevelev degrees are enumerative for sufficiently large . We prove the claim for all homogeneous varieties and all hypersurfaces of sufficiently low degree (compared to dimension). As an application, we prove a new result on the existence of very free curves of low degree on hypersurfaces in positive characteristic.
Cite
@article{arxiv.2110.05520,
title = {Enumerativity of virtual Tevelev degrees},
author = {Carl Lian and Rahul Pandharipande},
journal= {arXiv preprint arXiv:2110.05520},
year = {2023}
}
Comments
final version, erroneous example removed, reference to forthcoming work of Beheshti-Lehmann-Riedl-Starr-Tanimoto added. To appear in Ann. Sc. Norm. Super. Pisa Cl. Sci