A minimal degree which collapses ω1

Journal of Symbolic Logic 49 (1):298-300 (1984)
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Abstract

We consider a well-known partial order of Prikry for producing a collapsing function of minimal degree. Assuming MA + ≠ CH, every new real constructs the collapsing map.

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Citations of this work

Perfect Tree Forcings for Singular Cardinals.Natasha Dobrinen, Dan Hathaway & Karel Prikry - 2020 - Annals of Pure and Applied Logic 171 (9):102827.

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