Timeline for Two functors from Grp to Grp?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Jan 26, 2015 at 15:24 | answer | added | David E Speyer | timeline score: 8 | |
| Jan 26, 2015 at 11:56 | comment | added | David E Speyer | @HenrikRüping The identity must be sent to the identity. But then, if $G \to H \to G$ is the identity, we can't send the maps $G \to H$ or $H \to G$ to the identity. | |
| Jan 26, 2015 at 11:45 | comment | added | HenrikRüping | The identity functor and the functor sending every morphism to the trivial morphism should also do. | |
| Jul 8, 2013 at 14:24 | history | edited | Willie Wong | CC BY-SA 3.0 |
Edited to remove latex.mathoverflow invocation. I used the \mathsf font family so that it doesn't look too jarring compared to the accepted answer.
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| Nov 5, 2009 at 17:51 | vote | accept | Steven Gubkin | ||
| Nov 5, 2009 at 17:45 | answer | added | Reid Barton | timeline score: 33 | |
| Nov 5, 2009 at 17:32 | history | edited | Steven Gubkin | CC BY-SA 2.5 |
added 134 characters in body
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| Nov 5, 2009 at 17:20 | history | asked | Steven Gubkin | CC BY-SA 2.5 |