CMSA EVENTS
December 4, 2020 8:00 amTITLE: Michael Atiyah: Geometry and Physics ABSTRACT: In mid career, as an internationally renowned mathematician, Michael Atiyah discovered that some problems in physics responded to current work in algebraic geometry and...
Read more
CMSA EVENTS
December 3, 2020 10:30 amIdeas from the early 1990s for regulating chiral fermions in lattice gauge theory led to a number of developments which paralleled roughly concurrent and independent discoveries in condensed matter physics. ...
Read more
CMSA EVENTS
December 2, 2020 8:00 amTITLE: Is relativity compatible with quantum theory? ABSTRACT: We review the background, mathematical progress, and open questions in the effort to determine whether one can combine quantum mechanics, special relativity, and...
Read more
MATH TABLE
December 2, 2020 4:30 pmp-Adic numbers have always been primarily associated with pure Mathematics, and have become especially relevant in algebra and modern number theory. But why did Computer Scientists become interested in them?...
Read more
NUMBER THEORY
December 2, 2020 3:00 pmThe Cohen--Lenstra--Martinet conjectures have been verified in only two cases. Davenport--Heilbronn compute the average size of the 3-torsion subgroups in the class group of quadratic fields and Bhargava computes the...
Read more
RANDOM MATRIX
December 2, 2020 2:00 pmThe talk discusses a toy model for phase transitions in mixtures of incompressible droplets. The model consists of non-overlapping hypercubes of side-lengths 2^j, j\in \N_0. Cubes belong to an admissible...
Read more
CMSA EVENTS
December 2, 2020 12:00 pmI discuss the interplay between non-Fermi liquid behaviour and pairing near a quantum-critical point (QCP) in a metal. These tendencies are intertwined in the sense that both originate from the...
Read more
HARVARD-MIT ALGEBRAIC GEOMETRY
December 1, 2020 3:00 pmPositroid varieties are subvarieties of the Grassmannian obtained by intersecting cyclic rotations of Schubert varieties. We show that the "top open positroid variety" has mixed Hodge polynomial given by the...
Read more
CMSA EVENTS
December 1, 2020 11:30 amThe Dung Abstract Argumentation Framework (AAF) is an effective formalism for modelling disputes between two or more agents. Generally, the Dung AF is extended to include some unique interactions between...
Read more
MATHEMATICAL PICTURE LANGUAGE
December 1, 2020 10:00 amWe present recent progress on studies of 2-dimensional topological order in terms of tensor networks and its connections to subfactor theory. We explain how Drinfel'd centers and higher relative commutants...
Read more