Timeline for blowing up, -1 curves, effective and ample divisors
Current License: CC BY-SA 2.5
8 events
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| May 24, 2010 at 2:20 | history | edited | Emerton | CC BY-SA 2.5 |
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| Mar 2, 2010 at 15:01 | comment | added | Emerton | Dear Bjorn, I think you're right. | |
| Mar 2, 2010 at 5:56 | comment | added | Bjorn Poonen | All Andrea is really using is that E.f^* C = 0, which is easy because C can be replaced by a linearly equivalent divisor disjoint from P. Aren't you implicitly using the same kind of argument to know that D_1.D_2 = C_1.C_2 ? | |
| Mar 2, 2010 at 3:33 | comment | added | Emerton | Dear Bjorn, I saw that, but thought it might be helpful to have a computation that didn't use anything (counting the push-pull formula as something). | |
| Mar 2, 2010 at 2:50 | comment | added | Bjorn Poonen | @David Speyer and Emerton: See the last two paragraphs of Andrea Ferretti's version of the computation: it's simpler to move one curve instead of two. Maybe somebody should consolidate all these answers into one community wiki answer? | |
| Mar 2, 2010 at 2:11 | history | edited | Emerton | CC BY-SA 2.5 |
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| Mar 2, 2010 at 0:55 | history | edited | Emerton | CC BY-SA 2.5 |
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| Mar 1, 2010 at 22:03 | history | answered | Emerton | CC BY-SA 2.5 |