The Marina Ratner Lecture Series at KSoM will be held from February 26 to March 2, 2025. Please find the details below.

Title: An Ergodic Theoretic Proof of van der Waerden’s and Szemeredi’s Theorems on Arithmetic Progressions
Speaker: Prof. Joseph Mathew
Affiliation: ISI Kolkata [Former]
Venue: Seminar Hall, KSoM
Date and Time: February 26 to March 2, 2025 at 4:30 PM
Abstract: Let N = {1, 2, 3, …} be the disjoint union of finite number of sets C(1), C(2),…, C(k). Then one of the sets C(i) contains arithmetic progressions of arbitrary length. This is van der Waerden’s Theorem and Szemeredi’s Theorem is a generalization of this. Both the proofs are combinatorial. We will present an Ergodic Theoretic proof of these results due to Furstenberg.
A poster for the program can be found here.