NUMBER THEORY
March 10, 2021 3:00 pmI'll explain a very simple proof of the fact that K3 surfaces of finite height admit (many) CM lifts, a result due independently to Ito-Ito-Koshikawa and Z. Yang, which was...
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CMSA EVENTS
March 10, 2021 10:30 amFracton phases show exotic properties, such as sub-extensive entropy, local particle-like excitation with restricted mobility, and so on. In order to find natural fermionic fracton phases, we explore supersymmetric quantum...
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DIFFERENTIAL GEOMETRY
March 9, 2021 8:00 pmFor convex complete intersections, the Gromov-Witten (GW) invariants are often computed using the Quantum Lefshetz Hyperplane theorem, which relates the invariants to those of the ambient space. However, even in...
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HARVARD-MIT ALGEBRAIC GEOMETRY
March 9, 2021 3:00 pmWe will report on a recent joint work with Junyan Cao, cf. arXiv:2012.05063. The main topics we will discuss are revolving around the extension of pluricanonical forms defined on the...
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CMSA EVENTS
March 9, 2021 11:30 amEstimating the mean of a distribution from i.i.d samples is a fundamental statistical task. In this talk, we will focus on the high-dimensional setting where we will design estimators achieving...
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MATHEMATICAL PICTURE LANGUAGE
March 9, 2021 10:00 amOne of the most fascinating aspects about non-commutative spaces (aka von Neumann algebras), is the way their building data, which is often geometric in nature, impacts on the properties of their...
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COLLOQUIUMS
March 8, 2021 3:00 pmTitle: Topological Recursion and Enumerative Geometry Abstract: Given a holomorphic curve in the complex 2-plane together with a suitably normalized symmetric meromorphic bilinear differential, the Chekhov-Eynard-Orantin Topological Recursion defines an infinite sequence of symmetric...
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CMSA EVENTS
March 8, 2021 10:00 amThe theory of stable pairs (PT) with descendents, defined on a 3-fold X, is a sheaf theoretical curve counting theory. Conjecturally, it is equivalent to the Gromov-Witten (GW) theory of...
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ALGEBRAIC DYNAMICS
March 5, 2021 10:00 amIn the moduli space of one variable complex cubic polynomials with a marked critical point, given any $p \ge 1$, we prove that the loci formed by polynomials with the...
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CMSA EVENTS
March 4, 2021 10:30 am't Hooft anomalies provide a unique handle to study the nonperturbative infrared dynamics of strongly-coupled theories. Recently, it has been realized that higher-form global symmetries can also become anomalous, leading...
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