English

Heights of complete intersections in toric varieties

Algebraic Geometry 2024-12-24 v1 Number Theory

Abstract

The height of a toric variety and that of its hypersurfaces can be expressed in convex-analytic terms as an adelic sum of mixed integrals of their roof functions and duals of their Ronkin functions. Here we extend these results to the 22-codimensional situation by presenting a limit formula predicting the typical height of the intersection of two hypersurfaces on a toric variety. More precisely, we prove that the height of the intersection cycle of two effective divisors translated by a strict sequence of torsion points converges to an adelic sum of mixed integrals of roof and duals of Ronkin functions. This partially confirms a previous conjecture of the authors about the average height of families of complete intersections in toric varieties.

Keywords

Cite

@article{arxiv.2412.16308,
  title  = {Heights of complete intersections in toric varieties},
  author = {Roberto Gualdi and Martín Sombra},
  journal= {arXiv preprint arXiv:2412.16308},
  year   = {2024}
}

Comments

46 pages

R2 v1 2026-06-28T20:44:26.823Z