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The cofinality of the symmetric group and the cofinality of ultrapowers
- Source :
- Israel Journal of Mathematics. 242:97-128
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- We prove that $$\mathfrak{mcf}$$ and $$\mathfrak{mcf}$$ are both consistent relative to ZFC. This answers a question by Banakh, Repovs and Zdomskyy and a question from [MS11].
Details
- ISSN :
- 15658511 and 00212172
- Volume :
- 242
- Database :
- OpenAIRE
- Journal :
- Israel Journal of Mathematics
- Accession number :
- edsair.doi...........80c0cdbf46351ea09aa44fb921e9ac98
- Full Text :
- https://doi.org/10.1007/s11856-021-2124-2