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when toggle format what by license comment
Dec 26, 2016 at 20:40 history edited skd CC BY-SA 3.0
added 5 characters in body
Dec 26, 2016 at 20:39 comment added Will Sawin or "iff $M$ or $N$ is flat" should be "for all $N$ iff $M$ is flat"
Dec 26, 2016 at 19:58 comment added Qiaochu Yuan The "iff" should just be "if".
Dec 26, 2016 at 19:29 vote accept Arrow
Dec 26, 2016 at 19:17 review Late answers
Dec 26, 2016 at 19:36
Dec 26, 2016 at 19:02 history answered skd CC BY-SA 3.0