The Geometric Gersten conjecture for translation-like actions
The Geometric Gersten conjecture for translation-like actions
Let be a finitely generated group. A group is word-hyperbolic in the sense of Gromov, and a group acts translation-like on when the action is free and each group element moves points by a uniformly bounded distance in a Cayley graph of . A Baumslag–Solitar group is a group of the form for some nonzero integer .
Geometric Gersten conjecture. If is a finitely generated group that is not word-hyperbolic, then some Baumslag–Solitar group acts translation-like on .
The source presents this as a geometric version of a conjecture of Gersten proposed by Whyte and says that it would complete the characterization of finitely generated groups having a weakly aperiodic SFT. Its status is not resolved in the supplied text.
Sources & referencesView supporting material
Primary source
Emmanuel Jeandel, “Translation-like Actions and Aperiodic Subshifts on Groups”, arXiv:1508.06419 (2015).
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