Timeline for The fundamental group of an algebraic surface
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 17, 2011 at 10:39 | history | undeleted | S. Carnahan♦ | ||
| Aug 19, 2011 at 3:11 | history | deleted | Thom | ||
| Aug 18, 2011 at 2:02 | comment | added | Maharana | By a result of Nori (Corr 2.4B in "Zariski's conjecture and related problems"), if $C^2>0$ for an irreducible curve $C$ on a surface $X$ then $\pi_1(C)$ surjects on $\pi_1(X)$. Since $K^2>0$ for a general type surface it follows that $\Sigma_k^2>0$ as well, in your question, hence the required surjection. | |
| Aug 17, 2011 at 19:44 | answer | added | J.C. Ottem | timeline score: 2 | |
| Aug 17, 2011 at 18:41 | history | asked | Thom | CC BY-SA 3.0 |