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# Questions

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### Explicit model of BSU(2) in terms of singular complex

mar 5 at 16:51 Tim Perutz 8,65511642

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### $\pi$-cohomology class — a variant of cohomology class

mar 4 at 2:43 Xiao-Gang Wen 32827

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### Group cohomology of orthogonal groups with integer coefficient

feb 18 at 7:11 Mark Grant 9,06111333

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466
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### Homotopy class of the maps $(S_1)^d \to X$.

may 3 at 21:22 MathOverflow 123

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208
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### Cohomology of a fiber bundle with fiber $H$ and base space $BG$

nov 13 at 2:08 algori 16k12994

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215
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### A “dual” universal coefficient theorem

nov 2 at 3:14 washingdish 11

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### Canonical form of symmetric integer matrix M

may 20 at 22:29 Will Jagy 12.5k12645

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417
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### Group cohomology with $Z_2$ coefficient

oct 16 11 at 3:42 Chris Gerig 5,52611240

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630
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### Kuenneth-formula for group cohomology with nontrivial action on the coefficient

sep 15 11 at 6:49 Mark Grant 9,06111333

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