English

Ramification structures for quotients of the Grigorchuk groups

Group Theory 2021-10-26 v1

Abstract

Groups associated to surfaces isogenous to a higher product of curves can be characterised by a purely group-theoretic condition, which is the existence of a so-called ramification structure. In this paper, we prove that infinitely many quotients of the Grigorchuk groups admit ramification structures. This gives the first explicit infinite family of 3-generated finite 2-groups with ramification structures.

Keywords

Cite

@article{arxiv.2110.12376,
  title  = {Ramification structures for quotients of the Grigorchuk groups},
  author = {Marialaura Noce and Anitha Thillaisundaram},
  journal= {arXiv preprint arXiv:2110.12376},
  year   = {2021}
}

Comments

12 pages

R2 v1 2026-06-24T07:08:04.096Z