English

Asymptotic geometric Tevelev degrees of hypersurfaces

Algebraic Geometry 2023-02-03 v2

Abstract

Let (C,p1,,pn)(C,p_1,\ldots,p_n) be a fixed general pointed curve and let (X,x1,,xn)(X,x_1,\ldots,x_n) be a smooth hypersurface of degree ee and dimension rr with nn general points. We consider the problem of enumerating maps f:CXf:C\to X of degree dd (as measured in the ambient projective space) such that f(pi)=xif(p_i)=x_i. When ee is small compared to rr and dd is large compared to gg, ee, and rr, these numbers have been computed first by passing to a virtual count in Gromov-Witten theory obtained by Buch-Pandharipande, and then by showing (in work of the author with Pandharipande) that the virtual counts are enumerative via an analysis of boundary contributions in the moduli space of stable maps. In this note, we give a simpler computation via projective geometry.

Keywords

Cite

@article{arxiv.2203.08171,
  title  = {Asymptotic geometric Tevelev degrees of hypersurfaces},
  author = {Carl Lian},
  journal= {arXiv preprint arXiv:2203.08171},
  year   = {2023}
}

Comments

final version, numerous corrections and improvements after referee comments. to appear in Michigan Math. J