Colloquium
Colloquium – Lisa Traynor (Bryn Mawr)
ZoomTitle: Legendrian Torus and Cable Links Abstract: In contact topology, an important problem is to understand Legendrian submanifolds; these submanifolds are always tangent to the plane field given by the contact structure. In fact, every smooth knot type will have an infinite number of different Legendrian representatives. A basic problem is to give the “Legendrian
Colloquium – Wilfrid Gangbo, UCLA
ZoomTitle: Analytical Aspects of Mean Field Games Abstract: We highlight the isometry between the set of probability measures and the quotient of a Hilbert space. This allows to see that some important operators, such as the common noise operator in Mean Field Games, are nothing but partial Laplacians. We introduce to the so-called master equation
Colloquium – Peter Johnson (University of Virginia)
ZoomTitle: A zero surgery obstruction from involutive Heegaard Floer homology Abstract: A fundamental result in 3-manifold topology due to Lickorish and Wallace says that every closed, oriented, connected 3-manifold can be obtained by surgery on a link in the 3-sphere. One may therefore ask: which 3-manifolds can be obtained by surgery on a link with
Colloquium – Gordana Todorov (Northeastern University)
ZoomTitle: Friezes, Quiver Representations and Cluster Theory Abstract: After cluster algebras were introduced by Fomin and Zelevinsky, there were many new connections found among many fields of mathematics: combinatorics, representation theory, quiver representations, non-commutative algebra, poisson theory and much more. Friezes were introduced by Conway and Coxeter as a very combinatorial notion. Since the introduction of cluster
Colloquium – Dan Margalit (Georgia Institute of Technology)
ZoomTitle: Algebraic, geometric, and dynamical aspects of surfaces Abstract: Taffy pullers, lab stirrers, and paint mixers are complicated dynamical systems. To any such system we can ascribe a real number, called the entropy, which describes the amount of mixing being achieved. Which real numbers arise, and what do they say about the dynamics of the
Colloquium – Rosa Orellana (Dartmouth College)
ZoomTITLE: Products of characters of the symmetric group ABSTRACT: One of the main open problems in combinatorial representation theory of the symmetric group is to obtain a combinatorial interpretation for what are known as the Kronecker coefficients. The Kronecker coefficients are obtained when we decompose the tensor product of two irreducible representations of the symmetric
Colloquium – David Goldberg (Math Alliance, Purdue University)
ZoomAbstract: The National Alliance for Doctoral Studies in the Mathematical Sciences, more commonly known as the Math Alliance, grew out of an earlier NSF Funded project, The Alliance for the Production of African American PhDs in the Mathematical Sciences. In 2006 this project transformed itself to have a national scope, and it has been growing
Colloquium – Francois Dufour (University of Bordeaux)
ZoomTitle: Maximizing the probability of visiting a set infinitely often for a countable state space Markov decision process Abstract: This is a joint work with Tomas Prieto-Rumeau. In this talk, we consider a Markov decision process with countable state space and Borel action space. We are interested in maximizing the probability that the controlled Markov
Colloquium – Gieri Simonett (Vanderbilt University)
Title: Moving surfaces in geometry and physics Abstract: Moving surfaces are ubiquitous in many areas of mathematics and the applied sciences. In this talk I will first introduce some well-known geometric evolution equations, and then proceed to more complicated models that describe the motion of fluids and of materials that can undergo phase transitions.
Colloquium – Chi-Wang Shu (Brown University)
ZoomTitle: High order numerical methods for hyperbolic equations Abstract: Hyperbolic equations are used extensively in applications including fluid dynamics, astrophysics, electro-magnetism, semi-conductor devices, and biological sciences. High order accurate numerical methods are efficient for solving such partial differential equations, however they are difficult to design because solutions may contain discontinuities. In this talk we will