Junior Symplectic Geometry Seminar

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Date / Time

Speaker

Title

Location

25 January 2024
14:15-15:00

Metehan Aksay
ETH Zurich, Switzerland

Event Details

Title	The classification of contact toric manifolds
Speaker, Affiliation	Metehan Aksay, ETH Zurich, Switzerland
Date, Time	25 January 2024, 14:15-15:00
Location	HG G 43
Abstract	In this talk, we will define and discuss contact toric manifolds and their classification due to Eugene Lerman. It is a well-known theorem of Delzant that compact connected symplectic toric manifolds are classified by the image of their moment map. For compact connected contact toric manifolds, the situation is similar. According to Lerman’s work, compact connected contact toric manifolds are classified by the image of the contact moment map with exceptional cases occurring in dimensions 3 and 5 depending on whether the action is free.

The classification of contact toric manifoldsread_more

25 January 2024
15:15-16:00

João Camarneiro
ETH Zurich, Switzerland

Event Details

Title	Toric Real Loci
Speaker, Affiliation	João Camarneiro, ETH Zurich, Switzerland
Date, Time	25 January 2024, 15:15-16:00
Location	HG G 43
Abstract	In this talk, we will look at the fixed point sets (real loci) of certain anti-symplectic involutions of toric symplectic manifolds. Based on a theorem of Duistermaat, we show that they are branched coverings over the moment polytope, and exploit this fact to get a simple description of their topology. In the 4-dimensional case, we are even able to explicitly determine the full list of possibilities for the real locus, up to diffeomorphism.

Toric Real Lociread_more

26 January 2024
14:15-16:00

Dr. Joé Brendel
Tel Aviv University, Israel

Event Details

Title	A user-friendly intro to almost toric fibrations
Speaker, Affiliation	Dr. Joé Brendel, Tel Aviv University, Israel
Date, Time	26 January 2024, 14:15-16:00
Location	HG G 43
Abstract	The goal of this informal talk is to give a short overview of almost toric fibrations (ATFs). I will briefly explain what an almost toric base diagram is and review the basic operations (nodal trade, nodal slide, mutation) provided by the ATF-toolkit and go into details depending on the audience's preference. I will give many examples of applications to symplectic topology.

A user-friendly intro to almost toric fibrationsread_more

12 April 2024
15:15-16:15

Valentin Bosshard
ETH Zurich, Switzerland

Event Details

Title	Introduction to Lagrangian correspondences
Speaker, Affiliation	Valentin Bosshard, ETH Zurich, Switzerland
Date, Time	12 April 2024, 15:15-16:15
Location	HG G 26.3
Abstract	Lagrangian correspondences are generalizing symplectomorphisms as relations between symplectic manifolds. One motivation to do that comes from the desire to compare invariants of non-symplectomorphic but related symplectic manifolds. In particular, it is a handy tool to get maps in Floer homology. The theory can be used to do computations for symplectic reductions, Dehn twists, Viterbo restrictions and product manifolds.
Assets	Notesfile_download

Introduction to Lagrangian correspondencesread_more

17 May 2024
15:15-16:15

Reto Kaufmann
ETH Zurich, Switzerland

Event Details

Title	Title T.B.A.
Speaker, Affiliation	Reto Kaufmann, ETH Zurich, Switzerland
Date, Time	17 May 2024, 15:15-16:15
Location

Title T.B.A.

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