CMSA EVENTS
April 29, 2024 - May 3, 2024 9:00 amThe CMSA will be hosting a Workshop on Global Categorical Symmetries from April 29–May 3, 2024. Organizers: Dan Freed (Harvard CMSA & Math) Constantin Teleman (UC Berkeley) Participation in the workshop is...
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SEMINARS, NUMBER THEORY
May 1, 2024 3:00 pmSince the work of Jacobi and Siegel, it is well known that Theta series of quadratic lattices produce modular forms. In a vast generalization, Kudla and Millson have proved that...
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INFORMAL GEOMETRY AND DYNAMICS, SEMINARS
May 1, 2024 4:00 pmSee webpage for more details: https://people.math.harvard.edu/~ctm/sem/
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SEMINARS, HARVARD-MIT COMBINATORICS
May 1, 2024 4:15 pmToric matroid bundles are combinatorial objects which serve as a tropical analogue to vector bundles over toric varieties. I'll explain how to construct toric matroid bundles, how to check...
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CMSA Active Matter, SEMINARS, CMSA EVENTS
May 2, 2024 1:30 pmActive mechanical metamaterials harbor acoustic signal processing functionalities that are impossible to achieve in passive structures. Amplifying an elastic wave as it passes through the material is a prominent example,...
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COLLOQUIUMS, CMSA EVENTS
May 2, 2024 2:00 pm We study non-invertible topological symmetry operators in massive quantum field theories in (1+1) dimensions. In phases where this symmetry is spontaneously broken we show that the particle spectrum often has...
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COLLOQUIUMS, CMSA EVENTS
May 2, 2024 3:00 pmI will start with a brief overview of gauge theory phases in 3+1 dimensions through the lens of higher symmetries — in particular the realization of 1-form symmetries acting on...
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COLLOQUIUMS, CMSA EVENTS
May 2, 2024 4:30 pmHilbert’s Nullstellensatz says that the complex numbers C satisfy a universal property among all R-algebras: every not-too-large nonzero commutative R-algebra maps to C. Deligne proved a similar statement in categorical...
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SEMINARS, HARVARD-MIT COMBINATORICS
May 3, 2024 3:00 pmI will discuss the following result and its complex analog: For every nonzero polynomial P∈ R[x_1,…, x_n] of degree n, there is a point of the unit ball in R^d...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
May 7, 2024 2:00 pmEuclidean black hole 1-loop determinants have recently been shown to compute a renormalized thermal canonical partition function for free fields in Lorentzian signature. A key ingredient is a 'quasinormal mode...
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