Events
Jane Coons, Quasi-Independence Models with Rational Maximum Likelihood Estimator
ZoomLet X and Y be random variables. Quasi-independence models are log-linear models that describe a situation in which some states of X and Y cannot occur together, but X and…
Steven Heilman, University of Southern California, Three Candidate Plurality is Stablest for Small Correlations
ZoomSuppose we model n votes in an election between two candidates as n i.i.d. uniform random variables in {-1,1}, so that 1 represents a vote for the first candidate, and…
Cris Negron, UNC, Cohomology for Drinfeld doubles of finite group schemes
ZoomWe consider a finite group scheme G, and its associated representation category rep G. Here one can think of a finite discrete group, or an infinitesimal group scheme, such as…
Differential Equations and Nonlinear Analysis Seminar: Alexander Reznikov, Florida State University, Discrete minimization problems on non-rectifiable sets
ZoomWe survey the known results concerning the minimal Riesz energy on sufficiently smooth sets, and present some new results on fractal sets, which are the key examples of non-rectifiable sets.…
Anusha Krishnan, Syracuse University, Prescribing Ricci curvature on a product of spheres
ZoomThe Ricci curvature Ric(g) is a symmetric 2-tensor on a Riemannian manifold (M,g) that encodes curvature information. It features in several interesting geometric PDEs such as the Ricci flow and the Einstein equation.…
Tracie Ellis, SIAM Mathematics in Industry Seminar
ZoomZoom link: https://ncsu.zoom.us/j/96495890729?pwd=VUhKZWFKbXBGLy9LVjlJalRsL2RBdz09 Passcode: SIAM Abstract: Join Tracie Ellis, Vice President Business Analytics at Bandwidth, for an informal discussion about her team’s role in creating a data-driven culture at Bandwidth, a software/telecommunications…
Seth Sullivant, How to Give a Terrible Talk
ZoomOrganizer: smsulli2@ncsu.edu
Theresa Anderson, Purdue University, Dyadic analysis (virtually) meets number theory
ZoomIn this talk we discuss two ways in which dyadic analysis and number theory share a rich interaction. The first involves a complete classification of "distinct dyadic systems". These are…
Jane Coons, NC State, Applications of toric geometry in algebraic statistics
ZoomChair: Seth Sullivant (smsulli2@ncsu.edu, contact for Zoom access)
Silvia Gazzola, University of Bath, Iterative regularization methods for large-scale linear inverse problems
ZoomInverse problems are ubiquitous in many areas of Science and Engineering and, once discretized, they lead to ill-conditioned linear systems, often of huge dimensions: regularization consists in replacing the original…
Joonas Ilmavirta, Tampere University, Finland, The light ray transform
ZoomWhen is a function in the spacetime uniquely determined by its integrals over all light rays? I will introduce the problem, discuss why we might care about it, and how…
Rachel Minster, NC State, Randomized algorithms for tensors and matrices with applications
ZoomChair: Arvind Saibaba (asaibab@ncsu.edu, contact for Zoom access)
Jun Yan, NC State, Well-balanced numerical method for atmospheric flow equations with gravity
ZoomChair: Alina Chertock (chertock@math.ncsu.edu, contact for Zoom access)
Helen Cleaves, NC State, Global sensitivity analysis and reducing order modeling for high-dimensional systems
ZoomChair: Alen Alexanderian (alexanderian@ncsu.edu, contact for Zoom access)
Victor Magron, LAAS-CNRS, France, The quest of efficiency and certification in polynomial optimization
ZoomIn 2001, Lasserre introduced a nowadays famous hierarchy of relaxations, called the moment-sums of squares hierarchy, allowing one to obtain a converging sequence of lower bounds for the minimum of…
Samantha Kirk, NC State, How to Construct Representations of Twisted Toroidal Lie Algebras via Lattice Vertex Algebras
ZoomIf you take a simple finite-dimensional Lie algebra g and tensor it with the Laurent polynomials in one variable, then you will get an infinite-dimensional Lie algebra known as a loop algebra.…
Mitchel Colebank, NC State, Computational modeling of patient specific pulmonary hemodynamics
ZoomChair: Mette Olufsen (msolufse@ncsu.edu, contact for Zoom access)