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math.LO2004★ 1 cited
Almost isometric embeddings of metric spaces
Menachem Kojman, Saharon Shelah
We investigate a relations of almost isometric embedding and almost isometry between metric spaces and prove that with respect to these relations: (1) There is a countable universa…
math.LO2000
Fallen Cardinals
Menachem Kojman, Saharon Shelah
We prove that for every singular cardinal mu of cofinality omega, the complete Boolean algebra compP_mu(mu) contains as a complete subalgebra an isomorphic copy of the collapse alg…