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Uniformly Super McDuff II$_1$ Factors (2303.02809v1)

Published 6 Mar 2023 in math.OA and math.LO

Abstract: We introduce and study the family of uniformly super McDuff II$_1$ factors. This family is shown to be closed under elementary equivalence and also coincides with the family of II$_1$ factors with the Brown property introduced in arXiv:2004.02293. We show that a certain family of existentially closed factors, the so-called infinitely generic factors, are uniformly super McDuff, thereby improving a recent result of arXiv:2205.07442. We also show that Popa's family of strongly McDuff II$_1$ factors are uniformly super McDuff. Lastly, we investigate when finitely generic II$_1$ factors are uniformly super McDuff.

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