Timeline for Counting loops in degree: 1 or 2?
Current License: CC BY-SA 3.0
4 events
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| Aug 19, 2016 at 9:30 | history | edited | amakelov | CC BY-SA 3.0 |
typo
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| Aug 18, 2016 at 19:02 | comment | added | Qiaochu Yuan | One possible convention is to regard graphs as being directed by default. Then "undirected" means having the additional structure of an involution on edges that switches source and target, and now there's the question of whether you allow this involution to have fixed points ("self-adjoint" edges). | |
| Aug 18, 2016 at 13:06 | history | edited | amakelov |
fixed a wrong tag
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| Aug 18, 2016 at 12:56 | history | asked | amakelov | CC BY-SA 3.0 |