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Jun 30, 2015 at 10:27 vote accept Rune Haugseng
Jun 29, 2015 at 19:55 answer added Dmitri Pavlov timeline score: 3
Sep 27, 2012 at 2:48 comment added Charles Rezk I don't know where it "appears", though of course it is not hard to prove; it amounts to the fact that polynomial algebras are flat.
Sep 27, 2012 at 1:12 history asked Rune Haugseng CC BY-SA 3.0