Timeline for Flips in the Minimal Model Program
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 14, 2009 at 1:16 | comment | added | Charles Siegel | Well, it's a birational map $X\to Y$ such that if you look at $X$ minus the curve and $Y$ minus the new curve, they're isomorphic, but such that $X$ and $Y$ are not. So you've sort of cut out the curve and repositioned it. Again, I'm just learning this, so I can't give that much more of a picture and certainly not much more rigor than this. | |
| Nov 13, 2009 at 16:19 | comment | added | Csar Lozano Huerta | Thanks! the you answer sounds helpful, but what do you mean by "glue it back differently"? | |
| Nov 13, 2009 at 12:12 | history | answered | Charles Siegel | CC BY-SA 2.5 |