Timeline for Grothendieck group and faithfully flat morpshim
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 1, 2022 at 23:42 | comment | added | Jason Starr | Even for finite etale morphisms, the pullback is typically not injective, e.g., for the "multiplication by $n$" isogeny of an Abelian variety to itself, the kernel of the pullback map on Picard groups is the $n$-torsion subgroup of the Picard group. | |
| Apr 1, 2022 at 22:52 | answer | added | Mohan | timeline score: 6 | |
| Apr 1, 2022 at 22:16 | history | asked | OOOOOO | CC BY-SA 4.0 |