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Questions
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Why is the fundamental group of a compact Riemann surface not free ?

feb 15 at 6:18 Georges Elencwajg 24.3k●65●132

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When is the tensor product of two fields a field?

feb 15 at 7:06 Georges Elencwajg 24.3k●65●132

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Does a power series converging everywhere on its circle of convergence define a continuous function?

dec 21 at 3:37 George Lowther 9,428●1●24●44

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What does it mean geometrically that an element in a domain is irreducible?

may 7 11 at 11:23 François Brunault 7,389●1●13●35

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When is a singular point of a variety smooth?

jun 29 at 12:38 Georges Elencwajg 24.3k●65●132

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How many mathematicians are there?

dec 8 at 16:30 Alexandre Eremenko 10.6k●1●24●39

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Mr. G.P.K.'s questions [closed]

apr 1 11 at 10:21 Chuck 378●5●11

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Cubical vs. simplicial singular homology

may 19 at 16:47 Ronnie Brown 5,207●17●20

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Arbitrary products of schemes don’t exist, do they?

may 22 11 at 16:51 Jonathan Wise 4,290●1●10●28

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Is every connected scheme path connected?

nov 10 10 at 9:28 Anonymous 221●2●8

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