Cohomological distinction conjecture for the groups
Cohomological distinction conjecture for the groups
Fix, for every integer , the fundamental group of an -dimensional cusped hyperbolic manifold. Let be a finite collection of integers at least , and let be a finitely generated infinite group containing copies of all with as hyperbolically embedded subgroups. Write for its Morse boundary. Cohomological distinction conjecture. The Čech cohomology satisfies
non-trivial for and trivial for , with . The conjecture is intended to distinguish the quasi-isometry classes of the various groups : the Morse boundary should contain copies of the boundaries , contributing cohomology in the appropriate degrees, while otherwise being -dimensional.
Sources & referencesView supporting material
Primary source
Elia Fioravanti, Annette Karrer, Alessandro Sisto and Stefanie Zbinden, “On the Čech cohomology of Morse boundaries”, arXiv:2303.15981 (2024).
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