legacy video post

Title: On Floer cohomology and non-archimedian geometry Speaker: Mohammed Abouzaid, Columbia Date: Tuesday, February 18, 2014 Time: 2:30pm-3:30pm Place: Seminar Room 313, Simons Center       [box, type=”download”]Watch the video.[/box] Abstract: Work of Kontsevich-Soibelman and Fukaya indicates that there is a natural rigid analytic space (the mirror) associated to a symplectic manifold equipped with a Lagrangian torus fibration. In … Read more

Title: Minimal Discrepancy of Isolated Singularities and Reeb Orbits Continued Speaker: Mark McLean, MIT Date: Tuesday, February 18, 2014 Time: 11:15am-12:30pm Place: Seminar Room 313, Simons Center       [box, type=”download”]Watch the video.[/box] Abstract: Recall from the previous lecture, if A is an isolated singularity satisfying additional conditions then there is an invariant md(A) called the minimal discrepancy. Also … Read more

Title: Nondegenerate curves and pentagram maps Speaker: Boris Khesin, University of Toronto Date: Tuesday, February 11, 2014 Time: 1:00pm-2:00pm Place: Lecture Hall 102, Simons Center       [box, type=”download”]Watch the video.[/box] Abstract: A plane curve is called nondegenerate if it has no inflection points. How many classes of closed nondegenerate curves exist on a sphere? We are going to see … Read more

Title: Chiral and Gravitational Anomalies on Fermi surfaces Speaker: Ismail Zahed Date: Monday, February 10, 2014 Time: 4:00pm-5:30pm Place: Seminar Room 313, Simons Center       [box, type=”download”]Watch the video.[/box] Abstract: A Fermi surface threaded by a Berry phase can be described by the Wess-Zumino-Witten (WZW) term. After gauging, it produces a five-dimensional Chern-Simons term in the action. I … Read more

Title: Virtual fundamental chain, pseudo-holomorphic curve and Kuranishi structure Speaker: Kenji Fukaya Date: Friday, February 7, 2014 Time: 12:00pm-1:30pm Place: Seminar Room 313, Simons Center     [box, type=”download”]Watch the video.[/box] Abstract: I will start reviewing the previous talk about the local `universal’ family of deformation of Riemann surface plus curves. Then I will include two new points to discuss. … Read more

Title: Kuranishi Atlases Speaker: Dusa McDuff, Columbia Date: Thursday, February 6, 2014 Time: 11:45am-1:00pm Place: Seminar Room 313, Simons Center       [box, type=”download”]Watch the video.[/box]

Title: Cylindrical contact homology as a sometimes well-defined homology Speaker: Joanna Nelson, Columbia Date: Tuesday, February 4, 2014 Time: 2:15pm-3:30pm Place: Seminar Room 313, Simons Center       [box, type=”download”]Watch the video.[/box] Abstract:  In this follow up to last week I will explain recent progress in establishing the existence of cylindrical contact homology in dimension 3 with additional restrictions … Read more

Title: “Moduli spaces of J-holomorphic curves” Speaker: Dusa McDuff, Columbia Date: Tuesday February 4 Time: 1:00pm Place: Lecture Hall 102, Simons Center       [box, type=”download”]Watch the video.[/box] Abstract: This talk is aimed at nonspecialists, and will try to explain what the current Moduli Spaces program is hoping to achieve.  Why are J-holomorphic curves important in symplectic topology today? What … Read more