Timeline for Picard group modulo codimension 2
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 2, 2020 at 22:03 | history | became hot network question | |||
| Apr 2, 2020 at 19:04 | comment | added | Ariyan Javanpeykar | Ok, thank you. I misread the definition, sorry. | |
| Apr 2, 2020 at 16:31 | vote | accept | Hans | ||
| Apr 2, 2020 at 16:20 | comment | added | Hans | Not any coherent sheaves, but such $F$ that are a line bundle on $U=X\setminus Y$ for a finite set $Y$. Then the inverse of $[F]$ is any extension of the inverse of $F|_U$ to $X$. | |
| Apr 2, 2020 at 14:55 | answer | added | Sasha | timeline score: 6 | |
| Apr 2, 2020 at 14:51 | comment | added | Ariyan Javanpeykar | I am confused. Why is $Pic(X) \to G_X$ an isomorphism? Doesn't $G_X$ parametrize coherent sheaves? What is the inverse of $[F]$ in $G_X$? | |
| Apr 2, 2020 at 14:03 | history | asked | Hans | CC BY-SA 4.0 |