The PFA triviality conjecture for Stone–Čech remainders
The PFA triviality conjecture for Stone–Čech remainders
Let and be locally compact Polish spaces. For a locally compact space , write for its Stone–Čech remainder, and call a homeomorphism between such remainders trivial when it is induced by the representation described earlier in the paper. PFA triviality conjecture. Assuming the Proper Forcing Axiom, every homeomorphism between and is trivial. Since every trivial homeomorphism has a representation, this is equivalent to conjecturing that under PFA every homeomorphism between remainders of locally compact, non-compact, Polish spaces and has a representation. The conjecture is motivated by the stated automorphism conjectures for Boolean algebras and concerns the rigidity of Stone–Čech remainders under PFA.
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Primary source
Ilijas Farah and Saharon Shelah, “Rigidity of continuous quotients”, arXiv:1401.6689 (2014).
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