Timeline for non degenerate quadratic form on the group of correspondences on an algebraic curve?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 19, 2011 at 14:51 | vote | accept | unknown | ||
| Nov 19, 2011 at 4:38 | comment | added | Noam D. Elkies | Is this just intersection theory on $X \times Y\phantom.$? By the index theorem, the intersection pairing on ${\rm NS}(X \times Y)$ is negative definite on the subgroup orthogonal to $X \times y$ and $x \times Y$, and I guess you're reconstructing this pairing multiplied by $-1$. | |
| Nov 19, 2011 at 4:11 | answer | added | Sasha | timeline score: 2 | |
| Nov 19, 2011 at 2:20 | history | asked | unknown | CC BY-SA 3.0 |