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Questions
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How do we know that Fermat wrote his famous note in 1637?

feb 4 12 at 11:37 Franz Lemmermeyer 17.2k●1●38●101

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What finite group schemes can act freely on a rational function field in one variable?

may 18 10 at 12:22 MathOverflow♦ 1●2●3

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Is there a higher homotopical spinor theory?

nov 30 10 at 9:28 Angelo 19.5k●3●47●75

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Looking for a reference for a generalization of the Weierstrass preparation theorem

mar 20 11 at 8:59 Angelo 19.5k●3●47●75

 
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Two ways of getting a cohomology class from an extension of a discrete group by $\mathbb C^*$

apr 3 at 18:49 Angelo 19.5k●3●47●75