Results 41 to 50 of about 109 (103)
Derivations and KMS-Symmetric Quantum Markov Semigroups. [PDF]
Vernooij M, Wirth M.
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Ultraproducts and metastability
Given a convergence theorem in analysis, under very general conditions a model-theoretic compactness argument implies that there is a uniform bound on the rate of metastability. We illustrate with three examples from ergodic theory.
Avigad, Jeremy, Iovino, José
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Ultraproducts of factorial W*-bundles
This paper investigates factorial $W^*$-bundles and their ultraproducts. More precisely, a $W^*$-bundle is factorial if the von Neumann algebras associated to its fibers are all factors. Let $M$ be the tracial ultraproduct of a family of factorial $W^*$-bundles over compact Hausdorff spaces with finite, uniformly bounded covering dimensions.
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We construct, in ZFC, a sequence of Boolean algebras for which the product of Lengths is strictly smaller than the Length of the product algebra.
Garti, Shimon, Shelah, Saharon
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On ultraproducts of Boolean algebras and irr [PDF]
We prove the consistency of irr(prod limits_ ...
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General topology meets model theory, on p and t. [PDF]
Malliaris M, Shelah S.
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Finite simple groups as expanders. [PDF]
Kassabov M, Lubotzky A, Nikolov N.
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Ultraproducts and Saturated Models
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