Logic & Set Theory Philip Welch: Small algebras on small cardinals

9 February 2016, 2.30 PM - 9 February 2016, 4.30 PM

Philip Welch

Howard House 4th Floor Seminar Room

Looking at subalgebras of an algebra, on say aleph_omega, that are of yet smaller cardinality, but yet meet certain stationary subsets of the aleph_n, can require strong axioms of infinity. We survey the world of such structures that lie in some sense between Jonsson and Chang algebras.

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