Finite determination conjecture for cubical coarse median structures on right-angled Coxeter groups

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Let WΓW_{\Gamma} be a right-angled Coxeter group. A cubical coarse median rigidity conjecture.

  1. There are only finitely many cubical coarse median structures on WΓW_{\Gamma}.
  2. Each cubical coarse median structure on WΓW_{\Gamma} is completely determined by its restriction to maximal parabolic virtually-abelian subgroups.

The conjecture proposes a weaker form of coarse cubical rigidity for all right-angled Coxeter groups. The stronger rigidity statement is known to fail for some one-ended, irreducible examples, while the claims above were not established in the source.

References

Primary source

Elia Fioravanti, Ivan Levcovitz and Michah Sageev, “Coarse cubical rigidity”, arXiv:2210.11418 (2024).

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