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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Saturated Boolean Ultrapowers

## Saturated Boolean UltrapowersAdd to your list(s) Download to your calendar using vCal - Parente, F (University of East Anglia)
- Friday 09 October 2015, 14:40-15:35
- Seminar Room 2, Newton Institute Gatehouse.
If you have a question about this talk, please contact webseminars. Mathematical, Foundational and Computational Aspects of the Higher Infinite In this talk I will survey the general theory of Boolean ultrapowers, starting from the beginnings and including many applications and some possible future developments. Also, the set-theoretic approach to Boolean ultrapowers, due to recent work of Hamkins and Seabold, will be discussed. First developed by Mansfield as a purely algebraic construction, Boolean ultrapowers are a natural generalization of usual power-set ultrapowers. More specifically, I will focus on how some combinatorial properties of a ultrafilter U are related to the realization of types in the resulting Boolean ultrapower. Many results on $lambda$-regular and $lambda$-good ultrafilters, mostly due to Keisler, can be generalized to this context. In particular, I will sketch the construction of a $lambda$-good ultrafilter on the Levy collapsing algebra $mathrm{Coll}(lambda, This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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