English

Dense Subgroups of Prescribed Density

Group Theory 2025-07-28 v2

Abstract

Let GG be an infinite compact group. We prove that for every cardinal κ\kappa between the density and the weight of GG, there exists a dense subgroup of GG of density κ\kappa.

Keywords

Cite

@article{arxiv.2507.13031,
  title  = {Dense Subgroups of Prescribed Density},
  author = {Dekui Peng},
  journal= {arXiv preprint arXiv:2507.13031},
  year   = {2025}
}
R2 v1 2026-07-01T04:05:54.979Z