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when toggle format what by license comment
Jun 20, 2018 at 20:01 vote accept Johannes Hahn
Jun 11, 2018 at 16:43 comment added Julian Kuelshammer In particular, I find it worth pointing out that Rickard showed that every equivalence is of this form on objects.
Jun 11, 2018 at 15:59 history edited Mare CC BY-SA 4.0
added 5 characters in body
Jun 11, 2018 at 15:51 history answered Mare CC BY-SA 4.0