For more information about this meeting, contact Sergei Tabachnikov.
| Title: | Tropical Welschinger invariants |
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| Seminar: | Department of Mathematics Colloquium |
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| Speaker: | Ilia Itenberg, University of Strasbourg and MSRI |
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| Abstract: |
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| Welschinger invariants are designed to bound from below the number of real rational curves which pass through a given real generic collection of points on a real rational surface. In some cases (for example, for the projective plane) these invariants can be calculated using Mikhalkin's approach which deals with a corresponding count of tropical curves.
We will present the basic notions of tropical geometry and, using the tropical approach, will establish a logarithmic equivalence of Welschinger and Gromov-Witten invariants in several situations. |
Room Reservation Information
| Room Number: | MB114 |
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| Date: | 09 / 03 / 2009 |
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| Time: | 04:00pm - 05:00pm |
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