symplectic
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symplectic [2022/05/02 14:58] – kalinin0 | symplectic [2022/09/16 15:26] – kalinin0 | ||
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===== GeNeSys: Geneva-Neuchâtel Symplectic geometry seminar ===== | ===== GeNeSys: Geneva-Neuchâtel Symplectic geometry seminar ===== | ||
- | ---------------- | ||
- | 2022, April 27, Friday, Université de Neuchâtel | ||
- | | ||
- | Yakov Eliashberg (Stanford, visiting ITS-Zürich) | ||
- | | + | ---------------- |
+ | **2022, September 27, Tuesday, Université de Neuchâtel** | ||
+ | |||
+ | |||
+ | Richard Hind (University of Notre Dame) | ||
+ | Obstructing Lagrangian isotopies | ||
+ | Room B107, 14:00 | ||
+ | |||
+ | **Abstract: | ||
+ | |||
+ | I will describe some obstructions to the existence of Lagrangian tori in subsets of Euclidean space, and also to isotopies between the tori. The obstructions come from holomorphic curves and In simple situations are sharp. As a consequence we can derive obstructions to certain 4 dimensional symplectic embeddings, which turn out not to be especially strong, but the analysis does lead to precise statements about stabilized ellipsoid embeddings. Results are taken from joint works with Emmanuel Opshtein, Jun Zhang and Kyler Siegel and Dan Cristofaro-Gardiner. | ||
+ | |||
+ | Joé Brendel (Université de Neuchâtel and Tel Aviv University) | ||
+ | Lagrangian tori in S^2 x S^2 | ||
+ | Room E213, 16:00 | ||
+ | |||
+ | **Abstract: | ||
+ | |||
+ | There is an obvious family of Lagrangian tori in $S^2 \times S^2$, namely those obtained as a product of circles in the factors. We discuss the classification of such product tori up to symplectomorphisms and note that the non-monotone case is qualitatively very different from the monotone one. In the proof, we use a symmetric version of McDuff' | ||
+ | |||
+ | ---------------- | ||
+ | 2022, July 15, Friday, Université de Genève | ||
+ | |||
+ | |||
+ | Kyler Siegel (University of Southern California) | ||
+ | |||
+ | "On the symplectic complexity of affine varieties" | ||
Abstract | Abstract | ||
+ | |||
+ | Symplectic topology is a framework for studying global features of spaces, lying somewhere between differential topology and algebraic geometry in terms of flexibility versus rigidity. In this talk we introduce a new notion of " | ||
+ | |||
+ | Welcome and lunch. 11h-14h | ||
+ | |||
+ | Lecture 1. 14h-15h | ||
+ | |||
+ | Lecture 2. 15h30. | ||
+ | |||
+ | |||
+ | ---------------- | ||
+ | 2022, April 29, Friday, Université de Neuchâtel | ||
+ | |||
+ | |||
+ | Yakov Eliashberg (Stanford, visiting ITS-Zürich) | ||
+ | | ||
+ | " | ||
+ | |||
+ | Abstract | ||
+ | |||
Two years ago Ko Honda and Yang Huang proved a series of remarkable results concerning contact convexity in high dimension. | Two years ago Ko Honda and Yang Huang proved a series of remarkable results concerning contact convexity in high dimension. | ||
Unfortunately, | Unfortunately, | ||
While it follows the same overall strategy as Honda-Huang’s proof, | While it follows the same overall strategy as Honda-Huang’s proof, | ||
+ | |||
+ | Welcome and lunch. 12h-14h | ||
Lecture 1. 14h-15h | Lecture 1. 14h-15h | ||
+ | |||
Lecture 2. 15h30. | Lecture 2. 15h30. | ||
symplectic.txt · Dernière modification : 2023/11/27 17:55 de slavitya_gmail.com