ºÚÁϳԹÏÍø

Mathematics Colloquium

The next Mathematics Colloquium will take place on Monday, November 9, at 4 pm in YR 321. The speaker will be Dr. Hannah Hoganson, a Postdoctoral Fellow at the University of Maryland at College Park. She will speak about A tale of three geometries: Points, Hamming cubes, and one-ended trees.

Abstact. Many groups arise naturally as the symmetry group of a geometric or topological object. In this talk we will focus on infinite but 0-dimensional topological spaces, specifically those that arise as end spaces. Their homeomorphism groups can be though of as infinite analogs of symmetric groups. We will start with an overview of some basic ideas in geometric group theory, before focusing in on the homeomorphism groups of countable end spaces. These are large topological groups, which are not finitely generated, so classical tools and techniques don't apply. Instead, we turn to descriptive set theoretic techniques of Rosendal to study their large-scale geometry and present a trichotomy classification theorem. This talk includes joint work with George Domat and Robbie Lyman.

Recent Mathematics Colloquium Talks

Date	Topic	Speaker
Nov 2, 2026	Lattice point packings in polygons and Hilbert schemes	,  UMass - Amherst
Oct 15, 2026	Autonomous research: From prompt engineering to reinforcement learning	Dr. Youran Sun, University of Maryland
Sept 21, 2026	Global guarantees for multimodal sampling:  Analytical tools and the value of advice	Matheau Santana-Gijzen, Johns Hopkins University
Apr 29, 2026	Weyl, subconvex \( L^p \)-sets and arithmetic functions	,  Purdue University
Apr 22, 2026	Understanding the spline geometry of deep neural networks	,  Google Research
Mar 25, 2026	Weak assumptions in algebra and logic	,  CUNY Graduate Center
Feb 25, 2026	Reducibility of convex cones	, Viabit, LLC
Nov 10, 2025	Connecting noticing of student thinking to responsive teaching in math and science	, Chapman University
Oct 27, 2025	Introduction to statistical meta-analysis with an application	, UMBC
Oct 21, 2025	Large zeros of linear recurrence sequences	, Stellenbosch University

Seminar Meetings

The Mathematics Seminar is the venue where Towson faculty and students report on their research activities. 

In addition, several research groups have research seminars in their respective research areas:

• ASRM Seminar (coordinated by Min Ji):
  Meets on Fridays at 10 am
• Number Theory & Combinatorics Seminar (coordinated by A. Hardt, A. Kumchev and N. McNew):
  Meets on Tuesdays at 4:00 pm in YR 321.

Recent and Upcoming Seminars

• November 16, 2026: Number Theory & Combinatorics Seminar.
  , US Naval Academy, will give a talk on Arrow patterns: Avoidance that sees both one-line and cycle notation.
  Abstract. Arrow patterns, introduced by Berman and Tenner, generalize
  vincular patterns by recording information from both a permutation's one-line notation and its cycle notation. They have been used to study shallow permutations and to recharacterize 321-avoiding cyclic permutations purely in terms of pattern avoidance. In this talk I will describe a systematic study of arrow pattern avoidance, joint with Kassie Archer. We introduce arrow-Wilf equivalence and enumerate most classes of small arrow patterns, finding Bell, Catalan, Schröder, Riordan, and derangement-type numbers. I will also discuss recent follow-up work by Fu-Yang and Zhou-Yu, and several open problems.
• November 3, 2026: Number Theory & Combinatorics Seminar.
  , UMass Amherst, will give a talk on \( q,t \)-Catalan combinatorics and domino tilings.
• October 20, 2026: Number Theory & Combinatorics Seminar.
  Dr. Kassie Archer, US Naval Academy, gave a talk on Iterating the fundamental bijection.   
• October 13, 2026: Number Theory & Combinatorics Seminar.
  , Lafayette College, gave a talk on Local and global data of rational elliptic curves.
• April 28, 2026: Number Theory & Logic Seminar.
  , Purdue University, gave a talk on Effective Pila-Wilkie bounds for Pfaffian sets with some Diophantine applications.
• March 6, 2026: ASRM Speaker Series
  ', FSA, EA, presented a lecture How an actuary plays the "Game of Life."

Recent Mathematics Seminar & Sabbatical Talks

• On Monday, September 14, 2026, Dr. Diana Cheng presented a sabbatical talk on Increasing Teachers’ Self-Efficacy with Using Artificial Intelligence for Culturally Responsive Mathematics Lesson Development.
• On Wednesday, May 13, 2026, Dr. Kristin Frank presented a sabbatical talk on Rethinking the Role of Quantitative Reasoning in Students' Mathematical Thinking.
• On Monday, April 13, 2026. Dr. Xiaoyin Wang presented a sabbatical lecture on Bayesian Analysis for Negative Binomial INGARCH Models with Minimal Prior Information. 
• On Friday, March 13, 2026, Dr. Mostafa Aminzadeh presented a sabbatical talk on Extending Approximate Bayesian Computation to Nonlinear Regression Models: The Case of Composite Distribution. 
• On Wednesday, March 4, 2026, Dr. Chris Cornwell presented a sabbatical lecture on the Functional Dimension of ReLU Neural Networks.