English

Le Conte de la Mesure sur les Complexes Cubiques CAT(0)

Group Theory 2024-03-26 v1

Abstract

We revisit the topic of probability measures on CAT(0) cube complexes and prove that an amenable group acting on a CAT(0) cube complex, regardless of dimension, necessarily preserves an interval in the Roller compactification. In the finite dimensional case, we prove that there must be an orbit of cardinality 2N2^N, where NN is bounded by the dimension. This is a slight extension of the author's previous Tits' Alternative.

Keywords

Cite

@article{arxiv.2403.16360,
  title  = {Le Conte de la Mesure sur les Complexes Cubiques CAT(0)},
  author = {Talia Fernós},
  journal= {arXiv preprint arXiv:2403.16360},
  year   = {2024}
}

Comments

11 pages, 11 figures, in english

R2 v1 2026-06-28T15:32:03.793Z