CMSA GENERAL RELATIVITY SEMINAR
February 7, 2020 10:30 amIn this talk, we will introduce the concept of improvabilty of the dominant energy scalar and discuss strong consequences of non-improvability. We employ new, large families of deformations of the...
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THURSDAY SEMINAR
February 6, 2020 3:00 pmI will give an introduction to the topic of this semester's seminar: the automorphisms of E_n-operads. Our main goal is to understand the computation of Fresse, Turchin and Willwacher of...
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CMSA EVENTS
February 6, 2020 10:30 amOPEN NEIGHBORHOOD
February 5, 2020 4:30 pmImagine the universe is a periodic crystal. If gravity makes space negatively curved, the thin walls of the crystalline structure might trace out a pattern of circles in the sky, visible...
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LOGIC
February 5, 2020 4:30 pmA ray in a graph G = (V, E) is a sequence X (possibly infinite) of distinct vertices x0, x1, . . . such that, for every i, E(xi ,...
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CMSA EVENTS
February 5, 2020 4:30 pmI'll discuss a recent connection between two seemingly unrelated problems: how to measure a collection of quantum states without damaging them too much ("gentle measurement"), and how to provide statistical...
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NUMBER THEORY
February 5, 2020 3:00 pmThere is a large literature about points of bounded height on varieties, and about number fields of bounded discriminant. We explain how to unify these two questions by means of...
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CMSA EVENTS
February 5, 2020 10:30 amWe provide a new parton theory for hole doped cuprates. We will describe both a pseudogap metal with small Fermi surfaces and the conventional Fermi liquid with large Fermi surfaces...
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DIFFERENTIAL GEOMETRY
February 4, 2020 4:15 pm**CANCELED** Most 4-manifolds do not admit symplectic forms, but most admit 2-forms that are "nearly" symplectic. Just like the Seiberg-Witten (SW) invariants, there are Gromov invariants that are compatible with...
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MATHEMATICAL PICTURE LANGUAGE
February 4, 2020 3:30 pmGraph theory is important in information theory. We introduce a quantization process on graphs and apply the quantized graphs in quantum information. The quon language provides a mathematical theory to...
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