Testwiki:Reference desk/Archives/Mathematics/2013 August 25

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August 25

Integration

Can i integrate √cos(x) without using limits ? Vikas.geekyjock8 (talk) 18:51, 25 August 2013 (UTC)

Do you mean, can you express the indefinite integral in closed form? Yes, but you need elliptic integrals for that, it's $2E(x/2,\sqrt{2})$. -- Meni Rosenfeld (talk) 12:11, 26 August 2013 (UTC)

Čech Cohomology

Does anyone know of a good intermediate work that treats the subject? Preferably something that goes beyond the bit you might encounter towards the end of intro books, but doesn't assume you're already extremely familiar with it. Basically, something that someone acquainted with other aspects of (algebraic/general) topology could use as a crash course in the topic. Thank you for any suggestions:-)Phoenixia1177 (talk) 20:09, 25 August 2013 (UTC)

I vaguely remember Cech cohomology is covered in Théorie des Faisceaux by Godement. Don't know if that helps. 96.46.200.152 (talk) 07:32, 28 August 2013 (UTC)

Thank you for the suggestion; unfortunately, I can't speak French and there's no translation. I heard it's a very good book to learn from, though, so great suggestion:-)Phoenixia1177 (talk) 06:10, 29 August 2013 (UTC)