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Event Series Can embedding problems be used to distinguish S^4 from other (possible) homotopy 4-spheres?

Can embedding problems be used to distinguish S^4 from other (possible) homotopy 4-spheres?

CMSA 20 Garden Street, Cambridge, MA, United States

https://youtu.be/18eVp3fOh-4 Speaker: Michael Freedman, Harvard CMSA Title: Can embedding problems be used to distinguish S^4 from other (possible) homotopy 4-spheres? Abstract: There are approaches in the literature (using Khovanov homology) to detecting a homotopy 4-sphere, via the 4-ball genus of knots. I'd like to suggest moving from surfaces to 3-manifolds, that is approaching the problem […]

Event Series Quantum Matter in Mathematics and Physics Seminar

Phases and Phase Transitions of Spin Chains with Non-invertible Symmetries

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

Quantum Matter in Mathematics and Physics Seminar Speaker: Arkya Chatterjee (MIT) Title: Phases and Phase Transitions of Spin Chains with Non-invertible Symmetries Abstract: Non-invertible symmetries are often emergent at low-energies in gapless states of quantum matter. It is useful to construct lattice models that have these as exact symmetries in order to provide a UV-complete […]

Event Series Quantum Matter in Mathematics and Physics Seminar

Landscape of Tensor Network States Preparable from Measurement

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

Quantum Matter in Mathematics and Physics Seminar Speaker: Rahul Sahay (Harvard) Title: Landscape of Tensor Network States Preparable from Measurement Abstract: Measurements and feedback have emerged as powerful resources for creating many-body quantum states. However, a detailed understanding of what is possible is restricted to fixed-point representatives of phases of matter. In this talk, we go beyond this, […]

Workshop on Fibration and Degeneration in Calabi-Yau Geometry

20 Garden Street Cambridge, MA 02138, MA, MA, United States

Workshop on Fibration and Degeneration in Calabi-Yau Geometry Dates: June 24-26, 2024 Location: Harvard CMSA, 20 Garden Street, Cambridge, MA 02138 Organizer: Chuck Doran, Harvard CMSA Calabi-Yau manifolds occupy a central place in geometry. Their critical role as the cut-case between basic Fano building blocks and the zoo of General Type manifolds is key to […]

Compactified Hyperboloidal Evolution in Numerical Relativity

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

Speaker: Shalabh Gautam, International Center for Theoretical Sciences, Tata Institute of Fundamental Research Title: Compactified Hyperboloidal Evolution in Numerical Relativity Abstract: In the field of numerical relativity, a major challenge is to incorporate future null infinity into the computational domain using a well-posed formulation. Achieving this goal would not only allow us to accurately simulate any […]

Advances in Probability Theory and Interacting Particle Systems

Harvard Geological Lecture Hall 24 Oxford St, Cambridge, United States

Advances in Probability Theory and Interacting Particle Systems A conference in honor of S. R. Srinivasa Varadhan. August 26 - August 28, 2024 Harvard Geological Lecture Hall Conference Website: www.math.harvard.edu/event/math-conference-honoring-srinivasa-varadhan Speakers Ines Armendariz, Universidad de Buenos Aires Yuri Bakhtin, Courant Institute Gérard Ben Arous, Courant Institute Sourav Chatterjee, Stanford University Amir Dembo, Stanford University Peter […]

Instanton in Lattice QCD from Higher Categories and Higher Anafunctors

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

Speaker: Jing-Yuan Chen, Tsinghua University Title: Instanton in Lattice QCD from Higher Categories and Higher Anafunctors Abstract:  Putting continuum QFT (not just TQFT) on the lattice is important for both fundamental understandings and practical numerics. The traditional way of doing so, based on simple intuitions, however, does not admit natural definitions for general topological operators of continuous-valued […]

Mathematics and Machine Learning Program Opening Workshop

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

Mathematics and Machine Learning Program Opening Workshop Dates: September 3 - 5, 2024 Location: Room G10, CMSA, 20 Garden Street, Cambridge MA & via Zoom Webinar AI for Mathematicians, with Leon Bottou, François Charton, David McAllester, Adam Wagner, Boris Hanin, and Geordie Williamson.  A series of 6 tutorial lectures introducing concepts of AI and of […]

CMSA-2-600x338-1

CMSA/Math Fall Gathering

CMSA 20 Garden Street Cambridge, Massachusetts 02138 United States

September 5, 2024 4:00 pm CMSA Common Room, 20 Garden Street, Cambridge MA All CMSA and Math affiliates are invited.

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Big Data Conference 2024

20 Garden Street Cambridge, MA 02138, MA, MA, United States

  https://www.youtube.com/playlist?list=PL0NRmB0fnLJQS9vXNmNhMlza8r159l72s Youtube Playlist On September 6-7, 2024, the CMSA hosted the tenth annual Conference on Big Data. The Big Data Conference features speakers from the Harvard community as well as scholars from across the globe, with talks focusing on computer science, statistics, math and physics, and economics. Location: Harvard University CMSA, 20 Garden Street, […]

Combinatorics and geometry of the amplituhedron

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

Colloquium Speaker: Lauren Williams, Harvard University Title: Combinatorics and geometry of the amplituhedron Abstract: The amplituhedron is a geometric object introduced by Arkani-Hamed and Trnka to compute scattering amplitudes in N=4 super Yang Mills theory. It generalizes interesting objects such as cyclic polytopes and the positive Grassmannian. It has connections to tropical geometry, cluster algebras, […]

Topics in Deep Learning Theory

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

Topics in Deep Learning Theory Eli Grigsby