Timeline for What is the universal property of quotienting a normaliser of the subgroup?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 22, 2014 at 13:30 | history | bounty ended | CommunityBot | ||
| Dec 20, 2014 at 19:27 | vote | accept | CommunityBot | ||
| Dec 19, 2014 at 21:17 | comment | added | Qiaochu Yuan | I should mention that when I say "in more general contexts" I have in mind the following general question: you have a functor $F : C \to D$ and an object $c \in C$ to which you apply the functor to get an object $F(c)$. What extra structure does $F(c)$ have that reflects that it was obtained in this way? Said another way, what kind of "descent data" can we attach to $F(c)$? The starting observation is that at the very least we can attach an action of the natural automorphism group or endomorphism monoid of $F$ itself, but we can go farther than this in various ways. | |
| Dec 19, 2014 at 21:12 | history | edited | Qiaochu Yuan | CC BY-SA 3.0 |
deleted 5 characters in body
|
| Dec 19, 2014 at 9:09 | history | edited | Qiaochu Yuan | CC BY-SA 3.0 |
added 117 characters in body
|
| Dec 19, 2014 at 9:04 | history | answered | Qiaochu Yuan | CC BY-SA 3.0 |