English

The cotype zeta function of $\mathbb{Z}^d$

Number Theory 2022-04-20 v2 Combinatorics

Abstract

We give an asymptotic formula for the number of sublattices ΛZd\Lambda \subseteq \mathbb{Z}^d of index at most XX for which Zd/Λ\mathbb{Z}^d/\Lambda has rank at most mm, answering a question of Nguyen and Shparlinski. We compare this result to recent work of Stanley and Wang on Smith Normal Forms of random integral matrices and discuss connections to the Cohen-Lenstra heuristics. Our arguments are based on Petrogradsky's formulas for the cotype zeta function of Zd\mathbb{Z}^d, a multivariable generalization of the subgroup growth zeta function of Zd\mathbb{Z}^d.

Keywords

Cite

@article{arxiv.1708.08547,
  title  = {The cotype zeta function of $\mathbb{Z}^d$},
  author = {Gautam Chinta and Nathan Kaplan and Shaked Koplewitz},
  journal= {arXiv preprint arXiv:1708.08547},
  year   = {2022}
}

Comments

15 pages

R2 v1 2026-06-22T21:25:46.470Z