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when toggle format what by license comment
Dec 12, 2022 at 0:06 comment added Hunan Rostomyan @stupid In (1) "x" is a free variable, in (2-3) it's not -- the quantifiers bind it
Dec 10, 2022 at 23:01 comment added user63756 Sorry to jump in, but I can't completely understand the answer, and I think it's because no-one has said whether 1 2 and 3 contain free variables
Aug 11, 2013 at 16:41 review First posts
Aug 12, 2013 at 8:50
Aug 11, 2013 at 16:23 history answered Hunan Rostomyan CC BY-SA 3.0