Circles in the Morse boundaries of random right-angled Coxeter groups
Circles in the Morse boundaries of random right-angled Coxeter groups
Let -vertex graphs be sampled from a random graph model with density greater than and bounded away from , and let the associated right-angled Coxeter group be the group defined by the graph. Random Morse-boundary circle conjecture. For any density greater than and bounded away from , asymptotically almost surely the random right-angled Coxeter group contains circles in its Morse boundary. In particular, it is not virtually a right-angled Artin group. The conjecture is motivated by known results that, for a large range of density functions, random graphs asymptotically almost surely produce right-angled Coxeter groups with quadratic divergence, and that such graphs contain large induced polygons. Establishing the claimed circles in the Morse boundary would distinguish these groups from right-angled Artin groups and rule out virtual right-angled Artin structure.
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Primary source
Jason Behrstock, “A counterexample to questions about boundaries, stability, and commensurability”, arXiv:1705.03984 (2018).
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