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Questions
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The set-theoretic multiverse as a (bi)category

jul 21 at 20:59 Mirco Mannucci 2,029●7●18

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11
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169
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Is there a common framework for Tannaka and Gabriel-Ulmer reconstruction theorems?

jul 14 11 at 16:31 David Corfield 2,315●5●17

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Which languages could appear on Weil’s Rosetta Stone?

sep 14 10 at 13:03 Peter Arndt 6,868●18●42

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What are hypergroups and hyperrings good for?

jul 3 10 at 9:31 Gjergji Zaimi 37.4k●2●72●149

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When and why do universal objects have extra properties?

feb 22 11 at 13:02 Andrew Stacey 16k●1●40●110

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A coalgebraic description of the hyperfinite II_1 revisited

nov 12 09 at 20:07 Greg Kuperberg 36.2k●2●116●179

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234
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Is there a coalgebraic characterisation of the hyperfinite II_1 factor?

nov 12 09 at 23:35 Greg Kuperberg 36.2k●2●116●179

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Is the Fourier transform of exp(-||x||) non-negative?

oct 31 09 at 2:40 michael lacey 226●4