Events
Nonlinear Analysis Seminar and Differential Equation Seminar: Russell Luke, Universität Göttingen, Inconsistent Nonconvex Feasibility – Foundations and Application to Orbital Tomography
ZoomFeasibility models are a powerful approach to many real-world problems where simply finding a point that comes close enough to meeting many, sometimes contradictory demands is enough. In this talk…
Teaching and Learning Seminar: Rani Satyam, VCU, Affect Graphing: Tool for understanding students’ confidence, emotion, and experience
SAS 4201Affect (e.g., beliefs, attitudes, emotions) plays a crucial role in mathematics learning, but reliance on verbal and written responses (from surveys, interviews, etc.) can limit students’ expression of their affective…
Computational and Applied Mathematics Seminar: Hongkai Zhao, Duke University, Numerical understanding of neural networks: from representation to learning dynamics
SAS 4201In this talk we present both numerical analysis and experiments to study a few basic computational issues in practice: (1) the numerical error one can achieve given a finite machine…
Stochastics Seminar: Andrea Ottolini, UW-Seattle, Hitting times in Erdös-Rényi random graphs
SAS 4201Consider a dense Erdös-Rényi random graph with parameters n and p, with p fixed in (0,1). Let H_n(p) be the hitting time between two distinct vertices: run simple random walk from…
Applied Math Graduate Student Seminar: Abhijit Chowdhary, NC State, PyOED: An Open Source, Backend-Agnostic, Bayesian OED Toolbox for Rapid Development
SAS 4201PyOED is a highly extensible scientific package that enables developing and testing model-constrained optimal experimental design (OED) for inverse problems. Specifically, PyOED aims to be a comprehensive Python toolkit for…
Biomathematics Seminar: Caroline Moosmueller, UNC, Optimal transport for point-cloud data analysis with applications in biology
Cox 306This talk will focus on point-cloud data, their analysis and biological applications in which they naturally arise. In particular, I will introduce "optimal transport", which has evolved as one of…
Algebra and Combinatorics Seminar: Kailash Misra, NC State, Weight multiplicities of some affine Lie algebra modules
SAS 4201Consider the affine Lie algebra $\mathfrak{g}$ associated with the simple Lie algebra $sl(n)$ consisting of $n\times n$ trace zero matrices over the field of complex numbers. For every dominant integral…
Math Department Weekly Tea
SAS 4104Nonlinear Analysis Seminar and Differential Equation Seminar: Ming Chen, University of Pittsburgh, Global bifurcation for hollow vortex desingularization
ZoomA hollow vortex is a region of constant pressure bounded by a vortex sheet and suspended inside a perfect fluid; we can think of it as a spinning bubble of…
Computational and Applied Mathematics Seminar: Vakhtang Putkaradze, University of Alberta, Lie-Poisson Neural Networks (LPNets): Data-Based Computing of Hamiltonian Systems with Symmetries
SAS 4201Physics-Informed Neural Networks (PINNs) have received much attention recently due to their potential for high-performance computations for complex physical systems, including data-based computing, systems with unknown parameters, and others. The…
Stochastics Seminar: Sayan Banerjee , UNC-Chapel Hill, Ergodicity and fluctuations of the Atlas model
SAS 4201We investigate the long-time behavior and stationary fluctuations of an infinite-dimensional rank-based diffusion process, called the Atlas model, where particles move as independent Brownian motions, with the lowest ranked particle…
Biomathematics Seminar: Veronica Ciocanel, Duke, TBA
Cox 306Speaker's website Zoom Link
Algebra and Combinatorics Seminar: Spencer Daugherty, NC State, Thesis Defense
SAS 4201Speaker’s webpage: https://spdaugherty.github.io/
Math Department Weekly Tea
SAS 4104Nonlinear Analysis Seminar and Differential Equation Seminar: Hakima Bessaih, FIU, Various numerical scheme for stochastic hydrodynamic models
ZoomWe will consider various models in hydrodynamic, including the 2d Navier-Stokes, Boussinesq equations, and a Brinkman-Forchheimer-Navier-Stokes equations in 3d. These models are driven by an external stochastic Brownian perturbation. We…
Teaching and Learning Seminar: Molly Fenn and Patty Clemons, NC State, Desmos Activity Builder
SAS 4201Desmos Activity Builder is an online tool that can be used in a variety of ways in and out of the classroom. It can be used to introduce concepts or…
Geometry and Topology Seminar: Peter J. Olver, University of Minnesota, Structure and Generators of Differential Invariant Algebras
SAS 1216The structure of algebras of differential invariants, particularly their generators, is based on the symbolic invariant calculus provided by the method of equivariant moving frames. I will discuss a new…
Applied Math Graduate Student Seminar: John Darges, NC State, Sensitivity Analysis in Forward and Inverse Problems
SAS 4201Global sensitivity analysis (GSA) offers a flexible framework for understanding the structural importance of uncertain parameters in mathematical models. This dissertation focuses on forward and inverse problems arising in uncertainty…
Biomathematics Seminar: Elizabeth Brunk, UNC, Elucidating Mechanisms of Uneven DNA Segregation and its Impact on Cellular Processes
Cox 306This talk will be in person in Cox 306 where snacks and refreshments will be provided, there will also be a virtual option for those who cannot attend in person. Speaker's website…