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Questions
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Diffeomorphism coming from the s-cobordism theorem

dec 21 at 15:34 Mauricio 700●3●12

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representatives of the group of homotopy 7-spheres

may 16 12 at 1:47 Igor Belegradek 9,841●1●13●42

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Geometric meaning of L-genus

may 13 12 at 10:11 Liviu Nicolaescu 11.3k●1●20●33

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Is there a Galois correspondence for ring extensions?

jun 27 11 at 2:17 Jizhan Hong 326●1●7

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When is a finitely generated group finitely presented?

apr 23 11 at 16:27 Geoff Robinson 9,806●1●21●27

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Smoothness of distance function in Riemannian Manifolds

apr 14 10 at 20:12 Anton Petrunin 16.4k●41●110