English

A Schmidt-Nochka Theorem for closed subschemes in subgeneral position

Number Theory 2023-08-23 v1 Algebraic Geometry Complex Variables

Abstract

In previous work, the authors established a generalized version of Schmidt's subspace theorem for closed subschemes in general position in terms of Seshadri constants. We extend our theorem to weighted sums involving closed subschemes in subgeneral position, providing a joint generalization of Schmidt's theorem with seminal inequalities of Nochka. A key aspect of the proof is the use of a lower bound for Seshadri constants of intersections from algebraic geometry, as well as a generalized Chebyshev inequality. As an application, we extend inequalities of Nochka and Ru-Wong from hyperplanes in mm-subgeneral position to hypersurfaces in mm-subgeneral position in projective space, proving a sharp result in dimensions 22 and 33, and coming within a factor of 3/23/2 of a sharp inequality in all dimensions. We state analogous results in Nevanlinna theory generalizing the Second Main Theorem and Nochka's theorem (Cartan's conjecture).

Keywords

Cite

@article{arxiv.2308.11460,
  title  = {A Schmidt-Nochka Theorem for closed subschemes in subgeneral position},
  author = {Gordon Heier and Aaron Levin},
  journal= {arXiv preprint arXiv:2308.11460},
  year   = {2023}
}
R2 v1 2026-06-28T12:01:31.485Z