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Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Oct 23, 2016 at 11:20 comment added Arrow @DanielGrady that makes perfect sense. On the other hand, I thought the universal coefficient theorem is about coefficients, and I don't understand how this is related at all...
Oct 23, 2016 at 11:09 comment added Daniel Grady Shouldn't the analogy be something like: homs out of homology can be identified with cohomology classes (in nice cases), just as linear functionals on a vector space can be identified with the inner product with some vector (in nice cases)?
Oct 20, 2016 at 18:48 history edited Arrow CC BY-SA 3.0
added 6 characters in body
Oct 20, 2016 at 15:09 history asked Arrow CC BY-SA 3.0