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Ci-dessous, les différences entre deux révisions de la page.
| Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédente | ||
| start [2025/01/20 09:33] – thomas2 | start [2025/02/18 14:56] (Version actuelle) – [Seminars and conferences] g.m | ||
|---|---|---|---|
| Ligne 8: | Ligne 8: | ||
| Johannes Josi (February 2018). | Johannes Josi (February 2018). | ||
| - | Current members: Thomas Blomme, Francesca Carocci, Aloïs Demory, Gurvan | + | Current members: Thomas Blomme, Francesca Carocci, Aloïs Demory, Gurvan |
| Alumni: Ivan Bazhov, Johan Bjorklund, Rémi Crétois, Weronika Czerniawska, | Alumni: Ivan Bazhov, Johan Bjorklund, Rémi Crétois, Weronika Czerniawska, | ||
| Ligne 29: | Ligne 29: | ||
| ---- | ---- | ||
| - | Thomas Blomme (Neuchâtel), | + | |
| + | Ìý | ||
| + | "Split tori in S^2 x S^2, billiards and ball-embeddability" | ||
| + | Ìý | ||
| + | Abstract: In this talk we will discuss the symplectic classification of Lagrangian tori that split as circles in S^2 x S^2. As it turns out, this classification is equivalent to playing mathematical billiards on a rectangular table. This has many interesting applications, | ||
| + | Ìý | ||
| + | Gurvan ²Ñé±¹±ð±ô (UNIGE), Wednesday, Feb 19, 14h00, room 1-07 (Seminaire " | ||
| + | Ìý | ||
| + | "Floor diagrams and some tropical invariants in positive genus" | ||
| + | Ìý | ||
| + | Abstract : Göttche-Schroeter invariants are a rational tropical refined invariant, i.e. a polynomial counting genus 0 curves on toric surfaces, that can be computed with a floor diagrams approach. In this talk I will explain that this approach extends in any genus. This gives new invariants, related to ones simultaneously defined by Shustin and Sinichkin. I will then say few words on a quadratically enriched (and not refined !) version of this extension.Ìý | ||
| + | Ìý | ||
| + | Ìý | ||
| + | Uriel Sinichkin (Tel-Aviv), Wednesday, Feb 5, 14h00, room 1-07 + Zoom (Seminaire " | ||
| + | Ìý | ||
| + | " | ||
| + | Ìý | ||
| + | Abstract: In this talk I will present a generalization of Goettche-Schroeter and Schroeter-Shustin refined counts of tropical curves that splits to a product of terms on small fragments of the curves. This count is invariant in each of the following situations: either genus at most one, or a single contact element, or point conditions in Mikhalkin position. I will compare our results to ²Ñé±¹±ð±ô’s floor diagram approach, and discuss the specialization of the count at q=1, which recovers certain characteristic numbers. Ìý | ||
| + | Ìý | ||
| + | Ìý | ||
| + | | ||
| "Une preuve courte d’une formule de revêtement multiple" | "Une preuve courte d’une formule de revêtement multiple" | ||
start.1737362023.txt.gz · Dernière modificationÌý: de thomas2