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Mar 3, 2016 at 11:39 comment added Jik As @EricWofsey points out in his answer, the first relation is not an equivalence relation. Unless the problem calls it that, I'd edit that term out, because at least I had a hard time reading this problem as I assumed that the first relation indeed is an equivalence relation (didn't check it through during the first read) and thought you had confused "first example" and "second example" later.
Mar 2, 2016 at 7:52 history edited Roland CC BY-SA 3.0
added 53 characters in body
Mar 2, 2016 at 7:48 history edited Eric Wofsey CC BY-SA 3.0
edited tags; edited title
Mar 2, 2016 at 7:42 answer added Graham Kemp timeline score: 4
Mar 2, 2016 at 7:30 answer added Ove Ahlman timeline score: 4
Mar 2, 2016 at 7:29 answer added Eric Wofsey timeline score: 9
Mar 2, 2016 at 7:22 review First posts
Mar 2, 2016 at 7:32
Mar 2, 2016 at 7:18 history asked user3023185 CC BY-SA 3.0