Author: msaienga

PADS Seminar: Convergence of Empirical Measures, Mean-Field Games and Signatures

Speaker: Ruimeng Hu (UC – Santa Barbara)   Abstract: In this talk, we first propose a new class of metrics and show that under such metrics, the convergence of empirical measures in high dimensions is free of the curse of dimensionality, in contrast to Wasserstein distance. Proposed metrics originate from the maximum mean discrepancy, which … Continue reading PADS Seminar: Convergence of Empirical Measures, Mean-Field Games and Signatures

April 20, 2022, 4:10-5:10pm | Zoom
CATEGORIES: Conference, Department, Math

TrAC Workshop on Scientific Machine Learning: Foundations and Applications

TrAC @ Iowa State University  is organizing a technical workshop on Scientific Machine Learning: Foundations and Applications on April 22-23, 2022. About This Workshop: This workshop seeks to bring together top experts from areas of scientific machine learning to discuss progress that has been made on scientific machine learning research, and to identify promising avenues … Continue reading TrAC Workshop on Scientific Machine Learning: Foundations and Applications

Logic Seminar: Some fruit from set theoretic pluralism Part 2

Speaker: Henry Klatt (ISU)   Abstract: Unlike arithmetic, the identification of a canonical model of set theory is incredibly difficult. In this respect, the situation is more akin to geometry than arithmetic. We are capable of simulating alternative models with different structural properties within V, using either boolean valued forcing or a simulated ultrapower. This … Continue reading Logic Seminar: Some fruit from set theoretic pluralism Part 2

April 20, 2022, 2:10-3:00pm | Carver Hall 401
CATEGORIES: Department, Math, Seminar

Logic Seminar: Some fruit from set theoretic pluralism

Speaker: Henry Klatt (ISU) Abstract: Unlike arithmetic, the identification of a canonical model of set theory is incredibly difficult. In this respect, the situation is more akin to geometry than arithmetic. We are capable of simulating alternative models with different structural properties within V, using either boolean valued forcing or a simulated ultrapower. This is … Continue reading Logic Seminar: Some fruit from set theoretic pluralism

April 6, 2022, 2:10-3:00pm | Carver Hall 401

Math Biology Seminar: Insights into viral coinfections from mathematical models

Speaker: Hana Dobrovolny from Texas Christian University Abstract: Many patients hospitalized with influenza-like illnesses have been found to be infected with more than one virus. Clinical studies have found mixed results when investigating whether coinfections lead to more severe disease, with some studies even suggesting that coinfections are less severe than mono-infections. In vitro studies … Continue reading Math Biology Seminar: Insights into viral coinfections from mathematical models

April 6, 2022, 3:10-4:10pm | Zoom

PADS Seminar: Quasi-stationary distribution and ergodic control problems

Speaker: Guo-Jhen Wu (KTH Royal Institute of Technology) Abstract: We introduce two ergodic control problems that can be used to analyze the quasi-stationary distributions (QSDs) associated with a diffusion process. The two problems are in some sense dual, with one defined in terms of the generator associated with the diffusion process and the other in … Continue reading PADS Seminar: Quasi-stationary distribution and ergodic control problems

April 6, 2022, 4:10-5:10pm | Zoom

Discrete Math Seminar: Q-ary generalizations of set intersection and extremal graph theoretic problems

Speaker: Balázs Patkós (Alfréd Rényi Institute of Mathematics) Abstract: Q-ary generalizations of set intersection and extremal graph theoretic problems Characteristic vectors of subsets of an nnn-element ground set give a natural 1-to-1 correspondence between set systems and 0-1 vector systems. As the size of the intersection of two sets equals the scalar product of their … Continue reading Discrete Math Seminar: Q-ary generalizations of set intersection and extremal graph theoretic problems

April 12, 2022, 3:10-4:00pm | Carver Hall 401 & Zoom

Discrete Math Seminar: Weak degeneracy of graphs

Speaker: Anton Bernshteyn (Georgia Tech) Abstract: Motivated by the study of greedy algorithms for graph coloring, we introduce a new graph parameter, which we call weak degeneracy. This notion formalizes a particularly simple way of “saving” colors while coloring a graph greedily. It turns out that many upper bounds on chromatic numbers follow from corresponding … Continue reading Discrete Math Seminar: Weak degeneracy of graphs

April 5, 2022, 3:10-4:00pm | Carver 401

Algebra and Geometry Seminar: Lattice Points in Slices of Prisms

Speaker: Daniel McGinnis (ISU) Abstract: We study the Ehrhart polynomials of certain slices of rectangular prisms. We give a combinatorial formula for all the Ehrhart coefficients in terms of the number of weighted permutations satisfying certain compatibility properties. This result proves that all these polytopes are Ehrhart positive i.e. the coefficients of the Ehrhart polynomial … Continue reading Algebra and Geometry Seminar: Lattice Points in Slices of Prisms

April 19, 2022, 2:00-2:50pm | Carver 401

Mathematical Biology seminar: A Competition Model with Seasonal Reproduction

Speaker: Glenn Ledder Abstract: I will discuss the general ideas behind the choice between discrete and continuous time for dynamical system models, illustrated by a comparison of two simple population models. I will present a mixed-time (part discrete, part continuous) consumer-resource model that will serve as a further example of the points previously made. I … Continue reading Mathematical Biology seminar: A Competition Model with Seasonal Reproduction

March 30, 2022, 3:10-4:00pm | Zoom