Timeline for A question about running MMP with scaling
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 21, 2014 at 15:54 | vote | accept | Li Yutong | ||
| Oct 21, 2014 at 15:29 | comment | added | Hacon | That is a valid concern; the point is that since $K_X+\Delta +\lambda C$ is $f$-trivial, there is a chance that it is actually a pull-back from $Z$. To check this is not easy; it is essentially a consequence of the BPF thm; see 3.7(4) in Koll\'ar-Mori 1998 | |
| Oct 21, 2014 at 15:22 | comment | added | Li Yutong | Dear Prof. Hacon, thank you very much for your answer! I have a little concern about the formula $K_X + \Delta + \lambda C = f^*(K_Z + \Delta' + \lambda C')$. When $f: X \to Z$ is a small contraction, could $K_Z + \Delta' + \lambda C'$ no longer $\mathbb{Q}$-Cartier? | |
| Oct 21, 2014 at 14:54 | history | answered | Hacon | CC BY-SA 3.0 |