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May 30, 2016 at 22:53 history edited David Handelman CC BY-SA 3.0
non is not a word
May 30, 2016 at 19:49 comment added znt If the extension is split then the boundary map is probably zero. So if the extension is a product of a split situation and a random non-commutative non-split situation then it's not in general going to be surjective, I shouldn't think.
May 30, 2016 at 19:47 review First posts
May 30, 2016 at 20:22
May 30, 2016 at 19:44 history asked Coquelicot CC BY-SA 3.0