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Questions
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Where is number theory used in the rest of mathematics?

aug 21 at 17:08 Kjetil B Halvorsen 916●4●8

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Bizarre operation on polynomials

jan 21 10 at 4:37 Gjergji Zaimi 37.3k●2●72●149

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Is there an odd-order group whose order is the sum of the orders of the proper normal subgroups?

feb 21 11 at 9:56 François Brunault 7,389●1●13●35

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Why are abelian groups amenable?

jan 9 at 11:35 Theo Buehler 3,666●1●11●25

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How is the Julia set of $fg$ related to the Julia set of $gf$?

aug 7 at 16:06 Alexandre Eremenko 10.6k●1●24●39

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What are the algebras for the double dualization monad?

aug 16 at 16:50 Todd Trimble 22.3k●1●62●96

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What examples of distributions should I keep in mind?

aug 23 10 at 15:23 Willie Wong 6,987●20●43

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An ultrafilter is a set of subsets containing exactly one element of each finite partition: reference request

may 7 at 18:56 Butch Malahide 650●2●7

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There are two slightly different notions of ultraproduct. Why is one said to be better than the other?

aug 25 at 13:09 Tom Leinster 13.5k●1●40●82

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Given a polynomial f, can there be more than one constant c such that every root of f(x)-c is repeated?

nov 29 11 at 11:56 GH 14.9k●1●31●53

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