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Seminar

Tropical Seminar: "Tropical computation of characteristic numbers of the projective plane" December 11, 2009
Location: MSRI: Simons Auditorium
Speaker(s) Benoit Bertrand
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joint work with E. brugalle and G. Mikhalkin

The characteristic numbers Z(d,g,t) also called Zeuthen numbers are the number of degree d curves of genus g passing through 3d-1+g-t points and tangent to t lines. I will explain how to tropicalize the problem and use floor diagrams to compute Z(d,g,t) when g is 0 or 1.

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