2023

- July 24 - 28, Gauge Theory and Topology: in celebration of Peter Kronheimer’s 60th birthday, Oxford

- Oct. 31, J. Conway Spirited Seminar Series, online
- Oct. 2 - 7, Geometry and Physics of Quantum Toroidal Algebra, The IAS (Hangzhou)
- July 6 - 14, ICM 2022,
~~St. Petersbug~~on line - June 27 - July 2, Geometric Representation Theory,
~~Moscow (tentative)~~on line - June 11-12, Noncommutative Geometry and Representation Theory in memory of Tom Nevins, the University of Illinois at Urbana-Champaign
- June, visiting Oxford
- Mar. 14 - 25, the trimester program in vertex and chiral algebras, IMPA, Rio de Janeiro (online)
- Feb. 24 - 26, IMU EC meeting,
~~Pisa, Italy~~on line - Feb. 20 - 25, Vertex algebras and Poisson Geometry, SwissMAP Research Station (online)
- Involutions on symplectic singularities

~~Feb. 14 - 25, Frontiers in Representation Theory, Melbourne~~- Jan. 10 - 14, Connections between String Theory and Special Holonomy,
Oxford (online)
- Symmetric bow varieties

~~Jan. 6 - 9, Algebra and Geometry inspired from Integrable Field Theories, Glasgow~~(postponed to 2023)

- Dec. 13 - 16, Lothar Göttsche’s 60^th birthday (online)
- Nov. 29 - Dec. 3, Arithmetic algebraic geometry and mathematical physics (online)
- Oct. 31 - Nov. 6, Enveloping Algebras and Geometric Representation Theory, Oberwolfach Workshop ID 2144 (online)
~~Sept. or Oct., Instantons and Monopoles in Quantum Gauge Theory, IHES~~(postponed to 2022)- Sep. 27 - 28, Mathematics without Borders The Centennial of the International Mathematical Union, Strasbourg
- Thematic Program
on Arithmetic, Geometry, and Physics, Aug. 9 - 13, 5 x 90 minutes Lectures at KIAS
- A mathematical approach towards Coulomb branches of 3d SUSY gauge theories and related topics
- 1 and 2. I will briefly recall a symplectic reduction, which gives Higgs branches of 3d N=4 supersymmetric gauge theories. Then I will turn to a definition of Coulomb branches. It uses some tools in geometric representation theory, such as convolution algebras on equivariant homology groups, affine Grassmannians. I will briefly review them.
- 3. Symplectic duality was introduced by Braden, Licata, Proudfoot and Webster, as a relation between quantization of a pair of algebraic symplectic varieties. Higgs and Coulomb branches of a common gauge theory seem to be an example of such a pair. I will explain some examples of expected relations between them and their quantizations.
- 4 and 5. I will explain constructions of Kac-Moody Lie algebra representations on `homology' of Higgs and Coulomb branches for the case of quiver gauge theories. Higgs case is my construction in early '90s. Coulomb case is geometric Satake for finite type quiver, and its conjectural generalization.

- Notes 1, 2, 3,4, 5

- A mathematical approach towards Coulomb branches of 3d SUSY gauge theories and related topics
- Aug. 2 - 6, The international workshop on cluster algebras and related topics,
~~Morningside Center of Mathematics, Chinese Academy of Sciences, Beijing~~, online- Representations of shifted Yangian

- July 5 - 16, 2021 IHS Summer School - Enumerative Geometry, Physics and Representation Theory, online
~~June 28 - July 16~~, July 5 - 23, Quantum Fields, Geometry and Representation theory, ICTS, Bangalore, online- Title: Geometric Satake correspondence for affine Lie groups
- Abstract

- May 31 - June 5, Number Theory, Strings, and Quantum Physics, online
~~May 2 - 7, Quantization in Derived Algebraic Geometry and Representation Theory, BIRS Oaxaca, Mexico~~- Apr. 30, MIT Infinite Dimensional Algebra seminar, online
- Apr. 5, Berkeley String-Math Seminar, online
- Geometric Satake for affine Lie algebras

- Mar. 12, GeMAT seminar, Rozansky-Witten theories with noncompact targets, online
~~Jan. 6 - 10, UK-Japan Winter School, Glasgow~~(postponed to 2022)

~~Dec. 17 - 21, The international workshop on cluster algebras and related topics, Morningside Center of Mathematics, Chinese Academy of Sciences, Beijing~~(postponed to 2021, Aug. 2 - 6)~~Dec. 14 - 18, Arithmetric Algebraic Geometry and mathematical Physics, RIMS~~(postponed to 2021)~~Nov. 16 - 27, Frontiers in Representation Theory, Melbourne~~(postponed to 2022 Feb.)- Oct.
~~20~~21, Online China Geometry and Physics Seminar, zoom - Sept. 21 - Oct. 2, Knots, Strings, Symplectic Geometry and Dualities, Institut Mittag-Leffler
~~Sep. 28 - 29, IMU 100th anniversary, Strasbourg~~(postponed to 2021)~~Sep. 6 - 11, Geometry and Physics of Quantum Toroidal Algebra, The IAS (Hangzhou)~~(postponed to 2022)- Aug. 20 (21 in JST), M-seminar, Kansas State University, Bow varieties and representations of affine Lie algebras, zoom
~~Jul. 6 - 10~~, July 17,24,31, Aug. 7, 14, McKay correspondence, mutation and related topics,~~Kavli IMPU~~, Online- July 2, Leicester Algebra and Geometry Open ONline Seminar (LAGOON)
- Euler numbers of Hilbert schemes of points on simple surface singularities and quantum dimensions of standard modules of quantum affine algebras

- Jun. 25, Qolloquium: Quivers, Representations, Resolutions, zoom
- Jun. 22 - 26, Intensive Lectures at Tokyo Insitute of Technology via Zoom, June 22 - 26, 2020
- The password is unset today (June 23). Use the same id as yesterday without password to enter the meeting room.

- Theme : Mathematical Definition of Coulomb branches of 3d supersymmetric gauge theories
- Lecture Time Table
- Lectures will be given in English, and delivered by zoom.
- The zoom access is restricted to students and members of Tokyo Insitute of Technology.

- May 12, GRT at home seminar, zoom
~~June 11 - 14, Algebra and QFT on Catalina Island (tentative)~~(postponed)~~May 25 - 29, Holomorphic Quantum Field Theories, Kavli IPMU~~(postponed)~~Apr. - June, a trimester program focused on vertex algebras to be held at IMPA, Rio de Janeiro~~(postponed)~~May 1 - 3, JDG Conference on Geometry and Topology, Harvard Univ.~~(postponed)~~Mar. 22 - Apr. 17, SCGP~~~~Mar. 12-13, Eguchi Memorial Symposium, Kavli IPMU~~~~Mar.7 - 11, Caltech~~~~Jan. or Feb. National University of Singapore~~(postponed)

- Dec. 16 - 20, Master Lectures, TSIMF
- Oct. 21 - 25, Representation Theory of Algebraic Groups and Quantum Groups -- in honor of Professor Ariki's 60th birthday --, RIMS
- Sept. 30 - Oct. 11, Gauge theories and differential invariants, ICTP
- Aug. 26 - 30, Quantum Structures in Algebra and Geometry, Northeastern Univ.
- Quiver gauge theories with symmetrizers, video

~~Aug. 12 - 23~~, Aug. 19 - 23, Quiver varieties and representation theory, CRM, Montreal- Aisenstadt Chair
- Aug. 19, Introduction to Coulomb branches of 3d N=4 SUSY gauge theories
- Aug. 21, 23, Bow varieties, pdf

- July 29 - Aug. 2, Geometry, Integrability, and Moduli, MPIM, Bonn
- K-theoretic Coulomb branches of gauge theories

- July 22 - 26, Geometric and analytic aspects of moduli spaces, Hannover
- Symmetric bow varieties

- July, Paris (host : Eric Vasserot)
- June 3 - 21, Cluster Algebras 2019, RIMS
- May, SCGP
- Apr. 1 - 5, Symplectic Representation Theory, CIRM, Luminy
- Feb. 17 - 22, Fukaya 60, Kyoto
- Coulomb branches of quiver gauge theories and Kac-Moody Lie algebras

- Feb. 4 - 8, Representation theory, gauge theory, and integrable systems, Kavli IPMU, Tokyo (organizer)

- Dec. 17 - 21, Vertex Algebras and Gauge Theory, SCGP
- Vertex algebras in 4 dimensional theories

- Dec. 3 - 7, D-modules, Quantum geometry and related topics, RIMS
- Wild Hitchin moduli spaces

- Nov. 3, Infinite dimensional algebras, geometry and integrable systems, RIMS, Kyoto
- Introduction to Coulomb branches of 3d N=4 SUSY gauge theories, without affine Grassmannian

- Oct. 29 - Nov. 2, Geometric Satake and beyond, Tsinghua Sanya International Math. Forum
- Geometric Satake correspondence for Kac-Moody

- Aug. 1 - 8, International Congress of Mathematicians 2018, Rio de Janeiro
- July 17 - 21, Vertex algebras, factorization algebras and applications, Kavli IPMU
- July 9 - 13, Vertex operator algebras and symmetries, RIMS
- Moore-Tachikawa 2d TQFTs whose values are holomorphic symplectic varieties

- Jun. 25 - 29,
~~Geometric Representation Theory and Symplectic Varieties, South Bend, Indiana~~ - Jun. 18 - 22, String Math 2018, Sendai
- 3d N=4 QFT and ring objects on the affine Grassmannian

- May 12 - 14, Mirror Symmetry and Quantum cohomology, Berkeley
- Coulomb branches and their resolutions

- Apr. 26 - 27, visiting Arizona
- Moore-Tachikawa 2d TQFTs whose values are holomorphic symplectic varieties

- Apr. 24 - 25, visiting Caltech
- Moore-Tachikawa 2d TQFTs whose values are holomorphic symplectic varieties

- Apr. 14, Southern California Algebraic Geometry Seminar
- Moore-Tachikawa 2d TQFTs whose values are holomorphic symplectic varieties

- Mar. 23 - 26, Gauge Theory, Geometric Langlands and Vertex Operator Algebras, Perimeter Institute
- Jan. 16 - May 25, Enumerative Geometry Beyond Numbers, MSRI, I participate from Jan. 22 to 26, and Mar. 19 to May 25.
- Jan. 22 - 26, Introductory Workshop: Enumerative Geometry Beyond Numbers
- Mar. 19 - 23, Structures in Enumerative Geometry
- May 10, colloquium, Mathematical predictions/results from class S theories