Timeline for Open affine subscheme of affine scheme which is not principal
Current License: CC BY-SA 2.5
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 10, 2019 at 0:37 | comment | added | Peter McNamara | It's not compact. I think it's the simplest geometric example. | |
| Apr 9, 2019 at 14:26 | comment | added | user137767 | @GregMuller is this example compact? Does not he remove the origin from the elliptic curve (making it non-compact, presumably)? | |
| Nov 30, 2009 at 1:00 | comment | added | Greg Muller | Its the simplest compact example, because the curve of genus 0 has no open affine subschemes which aren't principal. | |
| Nov 30, 2009 at 0:13 | vote | accept | Wanderer | ||
| Nov 30, 2009 at 0:12 | comment | added | Wanderer | Beautiful - do you think this is the "simplest" example we can get? (As far as "simple" is well-defined in this context...) | |
| Nov 29, 2009 at 21:21 | history | answered | Peter McNamara | CC BY-SA 2.5 |