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Séminaire de Théorie des Nombres

Negative curves on surfaces..

Ted Chinburg

( Univ. of Penn. )

Salle 1

le 11 décembre 2014 à 11:00

The negative curve conjecture states that there is lower bound depending on a given complex projective surface SS for the self intersection of an effective curve CC on SS. In this talk I will survey some recent work on this conjecture. By the end of the talk I will describe some work with M. Stover which shows that there is a universal constant t with the following property. The number of CC on SS having C2<0C^2 <0 and arithmetic genus less than b1(S)/4b_1(S)/4 is bounded by tr(S)1t^{r(S)-1}, when b1(S)b_1(S) is the first Betti number of SS and r(S)r(S) is the rank of the Neron Severi group of SS.