English

Raimi's theorem for the $n$-dimensional torus

Combinatorics 2025-12-02 v1 Classical Analysis and ODEs Number Theory

Abstract

We extend Raimi's classical partition theorem to the continuous setting of the circle and nn-dimensional torus. Building on recent work of Hegyv\'ari, Pach, and Pham in finite groups, we prove that there exist measurable partitions of the nn-dimensional torus Tn\mathbb{T}^n with the property that for any finite measurable cover, some translated part of the cover has positive measure intersection with every partition element. Our proof adapts combinatorial arguments from the finite setting using measure-theoretic techniques and slicing arguments in product spaces.

Keywords

Cite

@article{arxiv.2512.00935,
  title  = {Raimi's theorem for the $n$-dimensional torus},
  author = {Hunseok Kang and Doowon Koh and Dung The Tran},
  journal= {arXiv preprint arXiv:2512.00935},
  year   = {2025}
}

Comments

14 pages

R2 v1 2026-07-01T08:02:25.855Z