Advances in Cardinal Arithmetic

By Saharon Shelah. 2007

126 citations recorded by the source corpus.

If cfκ = κ, κ + < cfλ = λ then there is a stationary subset S of {δ < λ : cf(δ) = κ} in I[λ]. Moreover, we can find C = 〈C δ : δ ∈ S〉, C δ club of λ, otp(C δ ) = κ, guessing clubs and for each α < λ we have: {C δ ⋂ α: α ∈ naccC δ } has cardinality < λ.

Subfields: Algebra and Number Theory, Computational Theory and Mathematics, Geometry and Topology

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