Timeline for 180˚ vs 360˚ Twists in String Diagrams for Ribbon Categories
Current License: CC BY-SA 2.5
16 events
| when toggle format | what | by | license | comment | |
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| May 4, 2015 at 16:37 | answer | added | Manuel Bärenz | timeline score: 1 | |
| Jun 24, 2010 at 20:37 | vote | accept | supercooldave | ||
| S Jun 24, 2010 at 20:37 | vote | accept | supercooldave | ||
| Jun 24, 2010 at 20:37 | |||||
| Jun 24, 2010 at 20:34 | vote | accept | supercooldave | ||
| S Jun 24, 2010 at 20:37 | |||||
| Jun 24, 2010 at 12:58 | answer | added | Peter Selinger | timeline score: 8 | |
| Jun 23, 2010 at 17:14 | answer | added | supercooldave | timeline score: 3 | |
| Jun 16, 2010 at 9:16 | history | edited | supercooldave | CC BY-SA 2.5 |
Trimmed question.
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| Jun 15, 2010 at 9:57 | history | edited | supercooldave | CC BY-SA 2.5 |
Added additional question.
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| Jun 15, 2010 at 3:41 | comment | added | Noah Snyder | As far as I know Peter and my paper is the only paper that really deals with any questions about half-ribbon categories. In particular, we only define half-ribbon Hopf algebras, not half-ribbon categories, so it's very unlikely that there's any Tannaka-Krein theorem in the literature. | |
| Jun 15, 2010 at 3:40 | answer | added | Noah Snyder | timeline score: 7 | |
| Jun 15, 2010 at 2:29 | comment | added | Charlie Frohman | If you take a strip of paper, put a half twist in it and glue the ends together you get a möbius band. Do the same thing with a full twist and you get an annulus. It probably means that there will be a forking in resolutions that will keep you from having truly local skein relations for invariants derived from such a theory. | |
| Jun 15, 2010 at 1:03 | comment | added | S. Carnahan♦ | @Theo: I have no idea. You should ask an expert (and/or peruse Google Scholar). | |
| Jun 14, 2010 at 22:39 | comment | added | Theo Johnson-Freyd | @Scott: I should (re)read Noah and Peter's paper. Do you know if anyone's worked out a "Tannaka Krein theorem" form half-twist ribbon categories? | |
| Jun 14, 2010 at 17:42 | comment | added | S. Carnahan♦ | For the case of quantum groups, see arxiv.org/abs/0810.0084 | |
| Jun 14, 2010 at 17:40 | history | edited | supercooldave | CC BY-SA 2.5 |
Added caveat.
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| Jun 14, 2010 at 17:31 | history | asked | supercooldave | CC BY-SA 2.5 |