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  • A fully local extension of Chern-Simons theory

    Science Center 507 1 Oxford Street, Cambridge

    Geometry and Quantum Theory Seminar Speaker: Dan Freed Title: A fully local extension of Chern-Simons theory Abstract: The Reshetikhin-Turaev-Witten invariants of 3-manifolds fit into a 3-dimensional topological field theory that […]

  • Discovery of unstable singularity with machine precision

    CMSA 20 Garden Street Cambridge, Massachusetts 02138 United States

    New Technologies in Mathematics Seminar Speaker: Yongji Wang, NYU Courant Institute of Mathematical Sciences Title: Discovery of unstable singularity with machine precision Abstract: Whether singularities can form in fluids remains a […]

  • Dimension Reduction and Adiabatic Limits of Generalized ASD Instantons

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Differential Geometry and Physics Seminar Speaker: Dylan Galt, Harvard Title: Dimension Reduction and Adiabatic Limits of Generalized ASD Instantons Abstract: I will begin by explaining a dimension reduction result for Tian's generalized […]

  • Classification of 2D Stabilizer States

    Common Room, CMSA 20 Garden Street, Cambridge, MA, United States

    Member Seminar Speaker: Bowen Yang Title: Classification of 2D Stabilizer States Abstract: I will explain how translation-invariant two-dimensional stabilizer states are completely classified by finite abelian groups with nondegenerate quadratic […]

  • The Moyal bracket and the BV cohomology of the spinning particle

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Quantum Field Theory and Physical Mathematics Seminar Speaker: Ezra Getzler, Northwestern Title: The Moyal bracket and the BV cohomology of the spinning particle Abstract: The spinning particle is the one-dimensional […]

  • Khovanov homology from KLRW algebras

    Science Center 507 1 Oxford Street, Cambridge

    Geometry and Quantum Theory Seminar Speaker: Sunghyuk Park, CMSA Title: Khovanov homology from KLRW algebras Abstract: This is the first in a four-part series, organized together with Vasily Krylov, Sebastian Haney, and […]

  • Featured

    Geometry Meets Physics: Finiteness, Tameness, and Complexity

    CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

    Geometry Meets Physics: Finiteness, Tameness, and Complexity Dates: November 12–14, 2025 Location: CMSA G10, 20 Garden Street, Cambridge MA 02138 (note: this event is in-person only) Finiteness is a fundamental […]

  • Featured

    Millennium Prize Problems Lecture – Pierre Deligne: What is the Hodge conjecture?

    Harvard Science Center Hall D 1 Oxford Street, Cambridge, MA, United States

    https://youtu.be/d23FICTAC1Y   Date: November 12, 2025 Time: 5:00–6:00 pm Location: Harvard Science Center Hall D, 1 Oxford St., Cambridge MA Speaker: Pierre Deligne, Institute for Advanced Study Title: What is […]

  • Freedman Seminar: Michael Freedman, CMSA & Bowen Yang, CMSA

    Virtual

    Freedman Seminar Speaker: Michael Freedman, Harvard CMSA Title: Sullivan’s work on Lipschitz structures Part II (but self-contained)   Speaker: Bowen Yang, CMSA Title: Deligne and Sullivan's work on complex bundles […]

  • Featured

    Conference on Geometry and Statistics

    CMSA 20 Garden Street Cambridge, Massachusetts 02138 United States

    Conference on Geometry and Statistics Dates: November 17–19, 2025 Location: CMSA G10, 20 Garden Street, Cambridge MA & via Zoom   Speakers Charles Fefferman, Princeton University Stephan Huckemann, Georg-August Universität […]

  • BV and the ThimTFT

    CMSA Room G02 20 Garden Street, Cambridge, MA

    Quantum Field Theory and Physical Mathematics Seminar Speaker: Justin Kulp, Stony Brook Title: BV and the ThimTFT Abstract: The SymTFT (or “quiche”) construction relates different global forms of d-dimensional QFTs […]