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when toggle format what by license comment
May 29, 2021 at 2:03 vote accept CommunityBot
May 29, 2021 at 6:24
May 28, 2021 at 21:28 vote accept CommunityBot
May 28, 2021 at 21:30
May 28, 2021 at 18:52 history edited user21167 CC BY-SA 4.0
added 11 characters in body
May 28, 2021 at 18:40 comment added user21167 And add the description of my example.
May 28, 2021 at 18:07 history edited user21167 CC BY-SA 4.0
added 1255 characters in body
May 28, 2021 at 11:43 history edited user21167 CC BY-SA 4.0
edited body
May 28, 2021 at 11:42 comment added user21167 Yes, you are right, I changed my question.
May 28, 2021 at 11:38 history edited user21167 CC BY-SA 4.0
added 192 characters in body
May 28, 2021 at 10:07 answer added Laurent Moret-Bailly timeline score: 3
May 28, 2021 at 6:33 history edited user21167 CC BY-SA 4.0
added 9 characters in body
May 27, 2021 at 21:43 comment added Martin Brandenburg I guess you mean non-trivial instead of non-empty? And the question sounds as if you have a specific functor $F$ in mind?
May 27, 2021 at 21:27 history edited user21167 CC BY-SA 4.0
edited title
May 27, 2021 at 21:19 history asked user21167 CC BY-SA 4.0