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Preprint Number 638
638. Ilijas Farah, Isaac Goldbring, Bradd Hart, and David Sherman Existentially closed II_1 factors E-mail: Submission date: 18 October 2013 Abstract: We examine the properties of existentially closed (R^omega-embeddable) II_1 factors. In particular, we use the fact that every automorphism of an existentially closed (R^omega-embeddable) II_1 factor is approximately inner to prove that Th(R) is not model-complete. We also show that Th(R) is complete for both finite and infinite forcing and use the latter result to prove that there exist continuum many nonisomorphic existentially closed models of Th(R). Mathematics Subject Classification: Keywords and phrases: |

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