Humboldt-Universität zu Berlin
Mathem.-Naturwissenschaftliche Fakultät
Institut für Mathematik
Sommersemester 2026
Time: Wednesday 13:15 - 14:45
Room: 3.007 John von Neumann-Haus
Humboldt Arithmetic Geometry Seminar
Seminar: Algebraic Geometry an der FU
| Time | Speaker | |
|---|---|---|
| 22.04.2026, 13:15 - 14: 45 | Federico Moretti (Stony Brook) | |
| Title: Picard bundles and degree of irrationality of jacobians | ||
| Abstract: The degree of irrationality of a projective variety is the smallest degree of a dominant rational map to projective space of the same dimension. I explain a vector-bundle approach via kernel bundles, implying that a globally generated bundle with positive top Chern class gives an immediate upper bound. I then study twists of Picard bundles and obtain that the degree of irrationality of any genus \(g\) Jacobian is at most \(2^g\). This is based on joint work with Andrés Rojas. | ||
| 29.04.2026, 13:15 - 14:45 | Theodosis Alexandrou (HU Berlin) | |
| Title: | ||
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