# 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 Rosso, **Indiana 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 Wu, **Texas A&M

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

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

Speaker/Affiliation: **Björn Sandstede, **Brown 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 Zapletal, **University of Florida

Title: Geometric Set Theory

Host: Paul Larson

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

Speaker/Affiliation: **Mikhail Ostrovskii, **St. 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 Schacht, **University 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 Balogh, **University 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 Sinapova, **University 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 Wang, **Howard 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 Dobrinen, **University 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 Yepremyan, **University 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 Fernos, **University 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 Ure, **Michigan 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 Tait, **Carnegie 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 Bennett, **Western 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 Scheirer, **Ashland 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 Corsten, **The 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 Banachspaces |
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 |

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 |

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 |