Timeline for algebraic group G vs. algebraic stack BG
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 20, 2009 at 1:30 | comment | added | David Ben-Zvi | there isn't only one point -- there's a connected groupoid of points, with automorphisms G.. if BG were a scheme you'd be right, but it's a stack.. or topologically it has nontrivial pi_1.. | |
| Oct 17, 2009 at 4:21 | comment | added | Ben Webster♦ | But there's only one k-point (where k is your base field), so what on earth does pointed get you? | |
| Oct 16, 2009 at 23:29 | history | answered | blah | CC BY-SA 2.5 |