CMSA EVENTS
September 23, 2021 9:00 amThe n-queens problem is to determine Q(n), the number of ways to place n mutually non-threatening queens on an n x n board. The problem has a storied history and...
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ALGEBRAIC DYNAMICS
September 23, 2021 4:00 pmGiven a rational map defined over a number field, the Galois orbits of points with canonical height tending to zero will equidistribute to a measure supported on the Julia set....
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CMSA EVENTS
September 23, 2021 10:30 amI start with a general map of gauge topology, including monopoles, instantons and instanton-dyons. Then comes reminder of the ``topological landscape", the minimal energy gauge field configurations, as a function...
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CMSA EVENTS
September 23, 2021 1:00 pmI will begin by introducing an emerging paradigm of cellular organization - the dynamic compartmentalization of biochemical pathways and molecules by phase separation into distinct and multi-phase condensates. Motivated by...
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OPEN NEIGHBORHOOD
September 22, 2021 4:30 pmProjective space and complex tori are two of the simplest types of manifolds we encounter, and in many ways they seem very different from each other. I will try to...
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SEMINARS, NUMBER THEORY
September 22, 2021 3:00 pmGiven a variety over a number field, its geometric etale fundamental group comes equipped with an action of the Galois group. This induces a Galois action on the pro-algebraic completion...
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CMSA EVENTS
September 22, 2021 10:30 amI will discuss ideas around symmetry and Wick rotation contained in joint work with Mike Hopkins (https://arxiv.org/abs/1604.06527). This includes general symmetry types for relativistic field theories and their Wick rotation. ...
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CMSA EVENTS
September 21, 2021 9:30 amhttps://harvard.zoom.us/j/94191911494?pwd=RnN3ZnIwcFYwd0QyT0MwZWVISmR5Zz09 Password: 1251442
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HARVARD-MIT ALGEBRAIC GEOMETRY
September 21, 2021 3:00 pmAlgebraic geometry has furnished fruitful tools for studying matroids, which are combinatorial abstractions of hyperplane arrangements. We first survey some recent developments, pointing out how these developments remained partially disjoint....
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CMSA EVENTS
September 21, 2021 10:30 amGromov-Witten invariants count pseudo-holomorphic curves on a symplectic manifold passing through some fixed points and submanifolds. Similarly, open Gromov-Witten invariants are supposed to count disks with boundary on a Lagrangian,...
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