ÓñÃÀÈË´«Ã½

Geneva Tropical Wiki

Outils pour utilisateurs

Outils du site

±Ê¾±²õ³Ù±ðÌý:
start

¶Ù¾±´Ú´Úé°ù±ð²Ô³¦±ð²õ

Ci-dessous, les différences entre deux révisions de la page.

Lien vers cette vue comparative

Les deux révisions précédentesRévision précédente
Prochaine révision		Révision précédente
start [2025/02/01 10:59] – [Seminars and conferences] g.mstart [2025/02/18 14:56] (Version actuelle) – [Seminars and conferences] g.m
Ligne 29: Ligne 29:
 ---- ----
  
-  Joé Brendel (ETHZ), Friday, Feb 21, 14h00, room 6-13 (Seminaire "Fables Géométriques")+  Joé Brendel (ETHZ), Friday, Feb 21, 15h15, room 6-13 (Seminaire "Fables Géométriques")
  
 "Split tori in S^2 x S^2, billiards and ball-embeddability" "Split tori in S^2 x S^2, billiards and ball-embeddability"
  
 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, for example to Lagrangian packing and the topological study of the space of Lagrangians. We will focus on one application in particular, asking which Lagrangian tori are contained in the image of a symplectic ball embedding. There are many open questions of more general interest surrounding this property of "ball-embeddability" of Lagrangians, which we will discuss at the end of the talk. This is joint work with Joontae Kim.  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, for example to Lagrangian packing and the topological study of the space of Lagrangians. We will focus on one application in particular, asking which Lagrangian tori are contained in the image of a symplectic ball embedding. There are many open questions of more general interest surrounding this property of "ball-embeddability" of Lagrangians, which we will discuss at the end of the talk. This is joint work with Joontae Kim. 
 +
 +  Gurvan Mével (UNIGE), Wednesday, Feb 19, 14h00, room 1-07 (Seminaire "Fables Géométriques")
 +
 +"Floor diagrams and some tropical invariants in positive genus"
 +
 +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.
 +
 +
 +  Uriel Sinichkin (Tel-Aviv), Wednesday, Feb 5, 14h00, room 1-07 + Zoom (Seminaire "Fables Géométriques")
 +
 +"Refined Tropical Invariants and Characteristic Numbers"
 +
 +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 Mével’s floor diagram approach, and discuss the specialization of the count at q=1, which recovers certain characteristic numbers. 
 +
  
   Thomas Blomme (Neuchâtel), Friday, Jan 31, 14h00, room 1-07 (Seminaire "Fables Géométriques")   Thomas Blomme (Neuchâtel), Friday, Jan 31, 14h00, room 1-07 (Seminaire "Fables Géométriques")
start.1738403976.txt.gz · Dernière modification : de g.m
Sauf mention contraire, le contenu de ce wiki est placé sous les termes de la licence suivante :