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Questions
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Can the fundamental group of any manifold be realized as the fund grp of a finite space?

nov 14 11 at 23:48 Valerio Capraro 3,595●11●25

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Elementary / Interesting proofs of the Nullstellensatz

jul 19 at 15:56 Matt 1●2

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An easy proof of the uncountability of bijections on natural numbers?

nov 27 at 17:16 Adam Kapelner 1

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Origin of the notation s=\sigma+it in analytic number theory

sep 12 at 23:05 Stopple 2,645●4●17

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Is every poset the poset of prime ideals of a ring?

apr 29 11 at 4:25 Abhishek Parab 701●5●15

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Remembering arrows' directions in basic Category Theory

feb 11 10 at 23:27 Akhil Mathew 12k●2●28●89

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Does there exist a Riemann surface corresponding to every field extension? Any other hypothesis needed?

feb 24 12 at 13:19 stjc 307●6

 
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Commutator of algebraic subgroups is connected

sep 3 at 20:48 Jim Humphreys 26.1k●38●84

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519
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Exercise in Milne’s CFT notes

feb 25 at 13:36 quid 13.3k●33●54

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Example of unramified abelian extension

jan 23 12 at 11:59 Franz Lemmermeyer 17.2k●1●38●101

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