Past Colloquia

2021-2022 Colloquium Series

Date/Time/Location: Thursday May 5, 2022 from 3:00-4:00pm in BAC 219

Speaker/Affiliation: Thomas Lamkin and Sean Longbrake, Miami University

Title (Lamkin): Noncommutative discriminants and the automorphism problem (3:00-3:25)

Abstract (Lamkin): Computing automorphisms groups of algebras is a notoriously difficult problem for commutative and noncommutative algebras alike. In this talk, I will briefly discuss how to use a family of tools known as noncommutative discriminants to study the automorphism group of noncommutative algebras. I will then discuss the automorphism group of the 2x2 quantum matrix algebras at roots of unity, including what information can be determined using discriminants.

Title (Longbrake): Nested Dependent Random Choice (3:30-3:55)

Abstract (Longbrake): The celebrated dependent random choice lemma states that in a bipartite graph an average vertex (weighted by its degree) has the property that almost all small subsets in its neighborhood has a common neighborhood almost as large as in the random graph of the same edge-density. A recent variant of the dependent random choice lemma is the so-called "nested dependent random choice," which extends dependent random choice to a recursive structure. This allows us to obtain a generalization of a theorem by Conlon, Fox, and Sudakov showing that a bipartite graph with one vertex complete to the other part has Sidorenko’s property and a theorem of Grzesik, Janzer, and Nagy regarding the Turan bound for a subset of r-degenerate graphs. 

Date/Time/Location: Thursday April 21, 2022 from 3:00-3:50pm on Zoom (details to follow)

Speaker/Affiliation: Vitali Vougalter, University of Toronto

Title: Solvability of some integro-differential equations with drift and superdiffusion


2019-2020 Colloquium Series

Thursday March 5, 2020 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Daniele RossoIndiana University Northwest

Title: A consistency equation, cylindrical paths, and twisted generalized Weyl algebras

Thursday March 12, 2020 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Jianchao WuTexas A&M

Title: C*-algebras, K-theory, and applications

Thursday Sep 19, 2019 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Björn SandstedeBrown University

Title: Traveling pulses in the FitzHugh-Nagumo system

Thursday Sep 26, 2019 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Michal Wojciechowski, Polish Academy of Science

Title: On the trace of Sobolev spaces on the Von Koch's snowflake

Host: Beata Randrianantoanina

Thursday Oct 3, 2019 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Jindrich ZapletalUniversity of Florida

Title: Geometric Set Theory

Host: Paul Larson

Thursday Oct 17, 2019 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Mikhail OstrovskiiSt. John's University, Queens, NY.

Title: Geometry of transportation cost (a.k.a. Earth Mover or Wasserstein distance)

Host: Beata Randrianantoanina

Friday Nov 15, 2019 from 4:05-4:55pm in BAC 219

Speaker/Affiliation: Mathias SchachtUniversity of Hamburg & Yale University

Title: Extremal problems for hypergraphs

Host: Tao Jiang



2018-2019 Colloquium Series

Date/Time/Location: Thursday May 2, 2019 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Jozsef BaloghUniversity of Illinois Urbana-Champaign

Title: The method of hypergraph containers

Host: Tao Jiang

Date/Time/Location: Tuesday April 23, 2019 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Dima SinapovaUniversity of Illinois Chicago

Title: The Tree Property

Host: Paul Larson

Date/Time/Location: Thursday March 14, 2019 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Xingting WangHoward University

Title: Noncommutative algebra from a geometric point of view

Host: Jason Gaddis

Date/Time/Location: Tuesday Feb 26, 2019 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Natasha DobrinenUniversity of Denver

Title: Ramsey Theory on Infinite Graphs

Host: Paul Larson

Date/Time/Location: Monday Feb 18, 2018 from 4:10-5:00pm in BAC 114

Speaker/Affiliation: Liana YepremyanUniversity of Oxford

Title: Turan-type problems for bipartite graphs and hypergraphs

Host: Tao Jiang

Date/Time/Location: Friday Feb 8, 2018 from 4:10-5:00pm in BAC 245

Speaker/Affiliation: Talia FernosUniversity of North Carolina at Greensboro

Title: The Wild World of Infinite Groups

Host: Beata Randrianantoanina

Date/Time/Location: Thursday Nov 29, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Charlotte UreMichigan State University

Title: The Brauer Class Associated to the Binary Cubic Generic Clifford Algebra

Host: Jason Gaddis

Date/Time/Location: Tuesday Nov 20, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Michael TaitCarnegie Mellon University

Title: Algebraic methods in extremal graph theory

Host: Louis DeBiasio

Date/Time/Location: Thursday Nov 15, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Patrick BennettWestern Michigan University

Title: Constrained Random Processes and Extremal Combinatorics

Host: Tao Jiang

Date/Time/Location: Thursday Nov 8, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Steven ScheirerAshland University

Title: Topological complexity of graph configuration spaces

Host: Dan Farley

Date/Time/Location: Thursday Sep 27, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Jan CorstenThe London School of Economics and Political Science

Title: Euclidean Ramsey theory and diameter Ramsey sets

Host: Louis DeBiasio

Date/Time/Location: Tuesday Sep 25, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Beka Ergemlidze and Abhishek Methuku, Central European University

Title: Turán numbers of cycles in linear hypergraphs

Host: Tao Jiang


2017-2018 Colloquium Series

Date/Time/Location: Thursday May 3, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Will Brian, U. North Carolina - Charlotte

Title: Factoring a minimal ultrafilter into a thick part and a syndetic part

Date/Time/Location: Friday April 27, 2018 from 4:25-5:15pm in BAC 245

Speaker/Affiliation: Alejandro B. Aceves, Southern Methodist University

Title: Recent trends in nonlinear optics and photonics: A mathematical modeling perspective

Date/Time/Location: Thursday April 19, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Asen Dontchev, University of Michigan and the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences

Title: The Inverse Function Theorems of L. M. Graves

Date/Time/Location: Thursday April 5, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Andr\'es Caicedo, Associate Editor at Mathematical Reviews

Title: Coloring the smooth numbers

Date/Time/Location: Thursday March 29, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Peter Howard, Texas A&M University

Title: Phase-asymptotic stability of transition front solutions in Cahn-Hilliard equations and systems

Date/Time/Location: Monday March 12, 2018 from 4:25-5:15pm in BAC 245

Speaker/Affiliation: Niklas Manz, College of Wooster

Title: Effect of fluid flow on the propagation of reaction-diffusion waves

Date/Time/Location: Thursday March 8, 2018 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Deepak Bal, Montclair State University

Title: Dynamic Concentration and Bipartite Ramsey Numbers

Date/Time/Location: Thursday Nov 16, 2017 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Robert Won, Wake Forest University

Title: Z-graded noncommutative algebraic geometry

Date/Time/Location: Thursday Nov 2, 2017 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Gábor Sárközy, Worcester Polytechnic Institute and Alfréd Rényi Institute of Mathematics

Title: Monochromatic covers in edge-colored graphs and hypergraphs

Date/Time/Location: Tuesday Oct 10, 2017 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Arnd Scheel, University of Minnesota

Title: Moduli Spaces of Growth Patterns

Date/Time/Location: Thursday Oct 5, 2017 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Jie Ma, University of Science and Technology of China

Title: From counting lines to counting subgraphs

Date/Time/Location: Tuesday Sep 26, 2017 from 3:00-3:50pm in BAC 219

Speaker/Affiliation: Michal Wojciechowski, Institute of Mathematics, Polish Academy of Sciences

Title: On the Auerbach-Mazur-Ulam problem


2016-2017 Colloquium Series

Date Speaker Affiliation Title Time, Place
Thurs Apr 6, 2017 Boris Mordukhovich Wayne State University TBA 3:00-3:50, BAC 219
Wed Apr 5, 2017 Thomas Schlumprecht Texas A&M University The algebra of bounded linear operators on \(\ell_p\oplus\ell_q\) and \(\ell_p\oplus c_0\), \(\ell_p\oplus c_0\), \(1\le p< q\le\infty\) has infinitely many closed subideals. 4:00-4:50, BAC 219
Thurs Mar 30, 2017 Scott Atkinson Vanderbilt University Minimal faces and Schur’s Lemma for embeddings into \(R^U\) 3:00-3:50, BAC 219
Thurs Mar 9, 2017 Florence Lancien Laboratoire de Mathématiques de Besançon, France. Analyticity of semigroups and geometry of Banach spaces 3:00-3:50, BAC 219
Tues Mar 7, 2017 Gilles Lancien Laboratoire de Mathématiques de Besançon, France. A few questions in the metric analysis of Banach spaces 3:00-3:50, BAC 219
Tues Feb 28, 2017 Mikhail Ostrovskii St. John's University Metric embeddings: embeddings of discrete metric spaces into Banach
3:00-3:50, BAC 219
Thurs Feb 23, 2017 Christopher Schafhauser University of Waterloo, Canada Quasidiagonal \(C^*\)-algebras 3:00-3:50, BAC 219
Fri Feb 17, 2017 Ivan Sudakov University of Dayton The Mathematics of Arctic Tipping Points 4:00-4:50, BAC 219
Thurs Nov 10, 2016 L.C. Kappe Binghamton University
Thurs Oct 27, 2016 Tony Evans

Wright State University

The strong admissibility of finite groups 3:00-3:50, BAC 219
Thurs Sep 29, 2016 Michał Wojciechowski

Polish Academy of Sciences

On the Pelczynski conjecture on Auerbach Bases 3:00-3:50, BAC 219
Tues Sep 27, 2016 Maria de Lourdes Merlini Giuliani

Universidade Fereral do ABC, Brazil

General Linear Loop 3:00-3:50, BAC 219
Thurs Sep 22, 2016 Chris Jones

University of North Carolina at Chapel Hill

A Dynamicist's View of Stability in Multi-Dimensions 3:00-3:50, BAC 219

2015-2016 Colloquium Series

Date Speaker Affiliation Title Time, Place
Thurs Sep 17, 2015 Elizabeth Gillaspy

University of Colorado - Boulder

K-theory and twisted groupoid C*-algebras
3:00-3:50, BAC 219
Thurs Sep 24, 2015 Penny Haxell

University of Waterloo

Connectedness, Sperner's Lemma, and combinatorial problems

3:00-3:50, BAC 102
Thurs Nov 5, 2015 Vikram Kamat

Virginia Commonwealth University

The Erdos--Ko--Rado theorem: An introduction using Katona's method of cyclic permutations
3:00-3:50, BAC 219
Thurs Nov 12, 2015 Florent Baudier

Texas A&M

Faithful embeddability of metric spaces and applications 3:00-3:50, BAC 219
Thurs Mar 10, 2016 Jozef Skokan

London School of Economics

The Multicolor Ramsey Numbers of Cycles 4:00-4:50, BAC 114
Thurs Mar 31, 2016 Stephane Lafurtune

College of Charleston

Linear and Orbital Stability of Solutions to the VFE and VFE Hierarchy 3:00-3:50 BAC 219
Thurs Apr 21, 2016 Claudia Miller

Syracuse University

TBA 3:00-3:50, BAC 219
Tues Apr 26, 2016 Shehzad Ahmed Ohio University TBA 3:00-3:50, BAC 219

2014-2015 Colloquium Series

Date Speaker Affiliation Title
Thurs Apr 16, 2015 Gyula O. H. Katona

Alfréd Rényi Institute of Mathematics, Hungarian Academy of Sciences

Largest families of sets, under conditions defined by a given poset
Thurs Apr 9, 2015 Will Boney

University of Illinois at Chicago

Ultraproducts in Nonelementary Classes
Thurs Apr 2, 2015 Liuzhen Wu

Institute of Mathematics, Chinese Academy of Sciences

A Lindelof group with non-Lindelof square
Thurs Mar 19, 2015 Zoltán Füredi University of Illinois Urbana-Champaign, Alfréd Rényi Institute of Mathematics Superimposed codes
Fri Mar 13, 2015 Hung Tran University of Chicago Selection problems for a discounted degenerate viscous Hamilton-Jacobi equation
Fri Mar 6, 2015 Miranda Teboh-Ewungkem Lehigh University The dynamics of malaria transmitting mosquitoes and their impact on the disease malaria-A mathematical study.
Thurs Feb 26, 2015 Jonathan Brown University of Dayton Injective homomorphisms from a graph C*-algebra
Thurs Dec. 4, 2014 Michael Brannan University of Illinois Connes' Embedding Property For Quantum Groups
Tues Nov 25, 2014 Stephane Lafortune College of Charleston Vortex Filaments and torus knots
Thurs Nov 20, 2014 Bhishan Jacelon Purdue University Self adjoint unitary orbits in pure C^*-algebras
Thurs Nov 13, 2014 Csaba Biro University of Louisville Stability questions on the dimension of posets
Thurs Nov 6, 2014 Landon Rabern LBD Data A common generalization of Hall's theorem and Vizing's edge-coloring theorem
Thurs Oct. 23, 2014 Theo Molla University of Illinois Urbana-Champaign Equitable coloring and H-factors of graphs
Thurs Sep. 25, 2014 Allan Lo University of Birmingham (UK) Edge-decompositions of graphs with high minimum degree

2013-2014 Colloquium Series

Date Speaker Affiliation Title
Thursday May 1, 2014 Steve Schecter North Carolina State University
Tuesday Feb. 18, 2014 Janet Striuli Fairfield University Finite invariants of infinite free resolutions
Thursday Dec. 12, 2013 Stratos Prassidis University of the Aegean/SUNY Binghamton The Isomorphism Conjecture for some subgroups of the automorphism group of the free group.
Thursday Dec. 5, 2013 Bernard Lidický University of Illinois Flag algebras and its application
Thursday Nov. 21, 2013 Patrick Reynolds University of Utah Recent progress on outer automorphism groups of free groups
Thursday Nov. 5, 2013 Kun Wang The Ohio State University On passage to over-groups of finite index of the Farrell-Jones isomorphism conjecture
Friday Nov. 1, 2013 Dan Freeman St. Louis University Moving redundant frames on manifolds
Thursday Oct. 10, 2013 Justin Moore Cornell University A geometric solution to the von Neumann-Day problem for finitely presented groups
Thursday Sep. 26, 2013 Jospeh Gallian University of Minnesota Duluth Using groups and graphs to create symmetry patterns
Thursday Sep. 26, 2013 David Sherman University of Virginia Model theory for functional analysis
Thursday Sep. 19, 2013 Julia F. Knight University of Notre Dame How hard is it to compute the floor function?
Thursday Sep. 5, 2013 Frank Connolly University of Notre Dame On the Classification of Pseudo-free Cocompact Group Actions on Contractible Manifolds
Thursday Aug. 29, 2013 Nam Trang Carnegie Mellon University Generalized Solovay Measures