Mathematics
8 years ago

New method reveals non-trivial automorphisms, challenging Martin's Axiom.

Proceedings of the American Mathematical Society
Martin’s Axiom is consistent with the existence of nowhere trivial automorphisms
Saharon Shelah, Juris Steprāns

Paper Summary

Martin's Axiom doesn't mean all transformations of sets of natural numbers are boring. There's a way to make models where every transformation of these sets is boring.

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