Central Michigan University Mathematics
Graduate Student Seminar (GSS)

Organizer

Graduate Student Seminar Coordinator: Debraj Chakrabarti
Because there might be a time delay in updating the webpage, please always check with the Coordinator for the available dates.

Meeting Times and Platforms

Regular GSS Talks are on Tuesdays, 4:00–4:50pm, in person in Room 227 of Pearce Hall. Talks at other times which may be attended by students taking the GSS for credit are noted in the schedule are noted in bold.

SCHEDULE 2024–2025

Date Speaker Title (Scroll down for Abstract) Remark
There are no talks planned for Fall 2024
2/18/2025 Pete Vermeire The Amazing Synthesis
2/25/2025 Nicholas Witt
(University of Arizona
Leveraging Technology and Place for Mathematics Teaching and Learning PE 227
abstract
2/27/2025 Shemail Fatima*
(Florida International University)
From Cognitive Processes to Classroom Practices: Supporting Students’ Conceptual Understanding in Mathematics PE 227
abstract
3/6/2025 Lino Guajardo* (Texas State University) Proof Comprehension Strategies and Meanings: Considering the Student's Perspectives PE 227
abstract
3/7/2025 Roberto Albesiano*
(University of Waterloo, Canada)
See TAG site 1:00 to 2:00 pm
PE 225
3/11/2025
3/18/2025 Alessandro Monguzzi
(University of Bergamo, Italy)
Convergence of ergodic means of Hilbert space shift operators.
3/25/2025 Lisa DeMeyer (CMU) Vertex Coloring of the Zero-divisor Graph 3:30 to 4:30 pm
4/1/2025
4/8/2025
4/15/2025 Debraj Chakrabarti (CMU) An introduction to the Bergman kernel
4/17/2025 Steven Bell (Fleming Lecturer) See colloquia site 4:00 to 5:00 pm
French Auditorium EHS Building
4/18/2025 Steven Bell (Fleming Lecturer) See colloquia site 2:00 -- 3:00 pm
PE 227
4/22/2025
4/29/2025 Isaac Cinzori TBA

Abstracts

Speaker: Pete Vermeire
Title: The Amazing Synthesis
Abstract: We will discuss what David Mumford called “The Amazing Synthesis”, the categorical equivalence(s) between compact Riemann surfaces, smooth algebraic curves, and field extensions of the complex numbers of transcendence degree one. During the talk we will define what these objects are.

Speaker: Alessandro Monguzzi
Title: Convergence of ergodic means of Hilbert space shift operators.
Abstract: In this talk, I will give a basic introduction to abstract Hilbert space shift operators and discuss the pointwise convergence of their ergodic means. Unilateral shift operators are key examples of non-surjective isometries and have a rich history in hard analysis and operator theory. I will review some well-known results and illustrate them with a few examples. If time permits, I will also present one of my own results on the speed of convergence of the ergodic means of shift operators. The talk is intended to be accessible to a general mathematical audience.

Speaker: Lisa DeMeyer
Title: Vertex Coloring of the Zero-divisor Graph
Abstract: The zero-divisor graph associated to a commutative ring, $R$, was first introduced by I. Beck in 1988. Beck’s primary aim was to study the vertex coloring of the zero-divisor graph of $R$. A proper coloring of a graph, $G$, is a coloring of the vertices of $G$ so that no two adjacent vertices have the same color. We will discuss Beck’s results, and several results which followed Beck’s 1988 paper. Several generalizations of the zero-divisor graph will be presented, and we will discuss known graph coloring results in each context.

Past Graduate Student Seminars: Spring 2023/Fall 2022