Seminars and Colloquia by Series

A Lovász-Kneser theorem for triangulations

Series
Additional Talks and Lectures
Time
Friday, January 23, 2026 - 11:00 for 1 hour (actually 50 minutes)
Location
Skiles 249
Speaker
Michael ZhengEmory University

In a highly influential paper from 1978, Lovász used topological methods to determine the chromatic number of the Kneser graph of the set of k-element subsets of a set with n elements. In this talk, we will discuss the Kneser graph of the set of triangulations of a convex n-gon and a recent proof that the chromatic number of this graph is n-2. The geometry of the associahedron will play a particularly important role in the argument. Based on a joint work with Anton Molnar, Cosmin Pohoata and Daniel Zhu.

Computer Algebra club/seminar

Series
Additional Talks and Lectures
Time
Wednesday, January 21, 2026 - 13:00 for 1 hour (actually 50 minutes)
Location
Skiles 006
Speaker
Anton LeykinGeorgia Tech

Let us discuss how to use generative AI to help with math and coding.

My presentation features two scenarios:

Coding in LaTeX. Suppose you have a raw draft of what potentially could be a math paper. We will consider and apply simple AI tools that may help realizing the potential.

Coding in CAS. Suppose you have a raw idea for a package in a Computer Algebra System; your raw idea may be limited to a rough description of the input/output of a method you would like to implement. How far can an AI assistant take you? Can it autonomously code a working software package?   

 

Computer Algebra club/seminar

Series
Additional Talks and Lectures
Time
Thursday, December 4, 2025 - 14:00 for 1 hour (actually 50 minutes)
Location
Skiles 006
Speaker
Daniel Hwang and Juliet WhiddenGeorgia Tech

Please Note: We will start with a presentation by Daniel Hwang and Juliet Whidden and continue with a free discussion.

Computer Algebra club/seminar

Series
Additional Talks and Lectures
Time
Thursday, October 23, 2025 - 14:00 for 1 hour (actually 50 minutes)
Location
Skiles 006
Speaker
Noah SolomonGeorgia Tech

We will start with a 15-minute presentation by Noah Solomon and continue with a free discussion.

A Roth type result for dense subsets of the integer lattice

Series
Additional Talks and Lectures
Time
Friday, October 11, 2024 - 14:00 for 1 hour (actually 50 minutes)
Location
Skiles 005
Speaker
Akos MagyarThe University of Georgia

 Let A be a subset of the integer lattice of positive upper density. Roth' theorem in this setting states that there are points x,x+y,x+2y in A with the length of the gap y arbitrary large. We show that the lengths of the gaps y contain an infinite arithmetic progression, as long as one measures the length in lp for p>2 even, while this not true for the Euclidean distance.

 

Such results have been previously obtained in the continuous settings for measurable subsets of Euclidean spaces using methods of time-frequency analysis, as opposed our approach is based on some ideas from additive combinatorics such as uniformity norms and arithmetic regularity lemmas. If time permits, we discuss some other results that can be obtained similarly.

The Heilbronn triangle problem

Series
Additional Talks and Lectures
Time
Friday, September 20, 2024 - 14:00 for 1 hour (actually 50 minutes)
Location
Skiles 005
Speaker
Cosmin PohoataEmory University

The Heilbronn triangle problem is a classical problem in discrete geometry with several old and new connections to various topics in extremal and additive combinatorics, graph theory, incidence geometry, harmonic analysis, and projection theory. In this talk, we will give an overview of some of these connections, and discuss some recent developments. Based on joint work with Alex Cohen and Dmitrii Zakharov.

Improved Bounds for Szemerédi’s Theorem

Series
Additional Talks and Lectures
Time
Monday, April 29, 2024 - 17:30 for 1 hour (actually 50 minutes)
Location
Skiles 005
Speaker
Mehtaab SawhneyMIT

We discuss recent improved bounds for Szemerédi’s Theorem. The talk will seek to provide a gentle introduction to higher order Fourier analysis and recent quantitative developments. In particular, the talk will provide a high level sketch for how the inverse theorem for the Gowers norm enters the picture and the starting points for the proof of the inverse theorem. Additionally, the talk (time permitting) will discuss how recent work of Leng on equidistribution of nilsequences enters the picture and is used. No background regarding nilsequences will be assumed. 

Based on joint work with James Leng and Ashwin Sah.

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