Timeline for algebraic group G vs. algebraic stack BG
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| May 15, 2015 at 13:51 | history | edited | Ben Webster♦ | CC BY-SA 3.0 |
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| Oct 16, 2009 at 18:08 | history | edited | Ben Webster♦ | CC BY-SA 2.5 |
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| Oct 16, 2009 at 16:53 | comment | added | Ben Webster♦ | Of course, the other answer might be that Scott and I are a bit off. Though I tend to think of gerbes as "the land where deformations that shouldn't exist live" as in obstructed defomrations really exist if you're willing to think of them as objects over the gerbe corresponding to their obstruction class. Though, maybe that's wrong. | |
| Oct 16, 2009 at 16:30 | comment | added | Anton Geraschenko | That sounds very reasonable, but why couldn't BG deform to a gerbe, which is some kind of a twist of a BG that only has a point locally? The answer is probably, "go learn more about gerbes." | |
| Oct 16, 2009 at 15:25 | history | answered | Ben Webster♦ | CC BY-SA 2.5 |