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# Questions

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### Is there a deep reason for the fecundity of involutions?

apr 12 at 12:46 Alexandre Eremenko 10.6k12440

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### The Riemann Hypothesis and the Langlands program

jan 22 at 10:17 Marc Palm 6,9561720

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### Excellent mathematical explanations

dec 27 at 22:15 Mark Bennet 154138

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### Is there an i.c.c. nonamenable simple group that is inner amenable?

dec 26 at 19:52 Andreas Thom 13.1k12364

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### What is the physical difference between states and unital completely positive maps?

dec 9 at 5:56 Greg Kuperberg 36.3k2117179

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### Is the von Neumann algebra associated to a unitary representation of an amenable group always injective?

dec 2 at 18:05 Jon Bannon 4,24911346

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### Proof synopsis collection

dec 1 at 17:11 Pablo Lessa 1,388312

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### Clarifying the link between deformation/rigidity and dual cocycles

nov 30 at 19:53 Makoto Yamashita 63644

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### Is there an upper bound on the dimension for irreducible representations of a continuous trace $C^{*}$-algebra?

oct 26 at 17:54 Leonel Robert 58035

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