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May 29, 2015 at 16:21 comment added Ramiro de la Vega @user69091, yes it is true.
May 28, 2015 at 8:24 vote accept CommunityBot
Sep 2, 2015 at 16:36
May 28, 2015 at 8:08 comment added user69091 Is it always true that $[X]^2=(X\times X\setminus \Delta)/\mathbb Z_2$, where $\Delta$ is the diagonal and $\mathbb Z_2$ acts by switching factors?
May 28, 2015 at 7:28 history answered Dominic van der Zypen CC BY-SA 3.0