Timeline for Minimal model of a non-singular complex projective surface defined over $\overline{\mathbb Q}$
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Oct 6, 2014 at 16:07 | vote | accept | Dubious | ||
| Oct 6, 2014 at 16:01 | comment | added | Pete L. Clark | Hartshorne, Theorem V.5.7, proves Castelnuovo's Criterion over any algebraically closed field. | |
| Oct 6, 2014 at 13:49 | comment | added | Dubious | Beautiful answer but I have still a doubt when you at the end write "...so the contractions can be done over $\overline{\mathbb Q}$". I formally don't see this. Why the contraction of a $(-1)$-curve defined over $\overline {\mathbb Q}$ is a morphism defined over $\overline {\mathbb Q}$? | |
| Oct 6, 2014 at 13:39 | history | edited | Pete L. Clark | CC BY-SA 3.0 |
added 632 characters in body
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| Oct 6, 2014 at 13:07 | history | answered | Pete L. Clark | CC BY-SA 3.0 |