Dr. Cindy Poo, Postdoc, Champalimaud Institute. Language: English

Abstract: In this talk, I will explain basics of the Seiberg-Witten equations and applications to topology. I will also mention about recent progress in the Seiberg-Witten Floer theory. 

Discussion of the recent articles: "Holographic quantum error-correcting codes: Toy models for the bulk/boundary correspondence" and "Holographic duality from random tensor networks" led by Han Yan. 

Researchers and professors from universities as well as renowned energy companies from all over Japan come together to discuss their recent projects. All OIST members are welcome to attend. Presentations on Friday will be held in English, presentations on Saturday in Japanese. 

Anton Zabrodin, Deputy Head of the International Laboratory of Representation Theory and Mathematical Physics, Professor, National Research University Higher School of Economics, Moscow.

Abstract: The rational homotopy groups of the group Diff(S^4) of self-diffeomorphisms of S^4 with the C^\infty-topology. We present a method to prove that there are many 'exotic' non-trivial elements in the rational homotopy groups of Diff(S^4) parametrized by trivalent graphs. The proof utilizes Kontsevich's characteristic classes for smooth disk bundles and a version of clasper surgery for families. In fact, these are analogues of Chern-Simons perturbation theory in 3-dimension and clasper theory due to Goussarov and Habiro.

Seminar by Prof. Matsueda, Vice President, NIT Sendai

Kenji Katayama, Department of Applied Chemistry, Chuo University

[Geometry, Topology and Dynamics Seminar] David Gabai (Princeton University) will talk about the General 4 dimensional Light Bulb Theorem.

Dr. Vania Cao: Commercial Programs Lead at Inscopix Inc. Language: English