Coskey–Farah conjecture on trivial homeomorphisms of Čech–Stone remainders
Coskey–Farah conjecture on trivial homeomorphisms of Čech–Stone remainders
Let and be second countable, locally compact, noncompact spaces. Write and , where and are their Čech–Stone compactifications. A homeomorphism between these remainders is trivial when it is induced outside compact subsets by a homeomorphism between the underlying spaces. Coskey–Farah conjecture. implies that, whenever and are homeomorphic, there are nontrivial homeomorphisms between them, while implies that all homeomorphisms between and are trivial. This conjecture extends the corresponding question about automorphisms of and connects set-theoretic axioms with the structure of abelian corona algebras; its resolution is not supplied here.
Sources & referencesView supporting material
Primary source
Alessandro Vignati, “Rigidity Conjectures”, arXiv:1812.01306 (2021).
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