Vorträge in der Woche 17.11.2025 bis 23.11.2025
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Mittwoch, 19.11.2025: Quadratically enriched plane curve counting via tropical geometry
Felix Röhrle (Tübingen)
Consider the classical problem in enumerative geometry of counting rational plane curves through a fixed configuration of points. The problem may be considered over any base field and the point conditions might be scheme theoretic points. Recently, Kass--Levine--Solomon--Wickelgren have used techniques from $\mathbb{A}1^^1^$-homotopy theory to define an enumerative invariant for this problem which is defined over a large class of possible base fields. This new theory generalizes Gromov-Witten invariants (base field = complex numbers) and Welschinger invariants (base field = real numbers) simultaneously. In this talk I will present a tropical correspondence theorem, which allows to effectively compute these new invariants. This is joint work with Andrès Jaramillo-Puentes, Hannah Markwig, and Sabrina Pauli.
| Uhrzeit: | 10:15 - 11:15 |
| Ort: | S10 |
| Gruppe: | Oberseminar kombinatorische algebraische Geometrie |
| Einladender: | Daniele Agostini, Hannah Markwig |
Donnerstag, 20.11.2025: TBA
Saradha Senthil-Velu
TBA
| Uhrzeit: | 14:00 |
| Ort: | Seminarraum C4H33 and virtual via zoom, for zoom link please contact Martina Neu |
| Gruppe: | Oberseminar Geometrische Analysis, Differentialgeometrie und Relativitätstheorie |
| Einladender: | Carla Cederbaum, Gerhard Huisken, zusammen mit Jan Metzger (Potsdam) |
Donnerstag, 20.11.2025: TBA
Marcus Flook (ANU)
TBA
| Uhrzeit: | 15:00 |
| Ort: | Seminarraum C4H33 and virtual via zoom, for zoom link please contact Martina Neu |
| Gruppe: | Oberseminar Geometrische Analysis, Differentialgeometrie und Relativitätstheorie |
| Einladender: | Carla Cederbaum, Gerhard Huisken, zusammen mit Jan Metzger (Potsdam) |