Events for 02/10/2025 from all calendars

Geometry Seminar

Time: 3:00PM - 4:00PM

Location: BLOC 302

Speaker: S. Lovett, UCSD

Title: Corners and arithmetic extensions of Kelley-Meka

Abstract: A classical question in additive combinatorics, dating back for close to 100 years, is what is the densest subset of integers without a 3-term arithmetic progression. In 2023, Kelley and Meka made a huge breakthrough on the problem, proving bounds which are close to the best known constructions. In this talk, I will describe an on-going effort to extend their techniques to more problems in additive combinatorics, and in particular to the "corners" problem, which can be viewed as a 2-dimensional analog of the 3-term arithmetic progression problem, and variants of it. Joint work with Michael Jaber and Anthoni Ostuni.

Student/Postdoc Working Geometry Seminar

Time: 4:00PM - 5:00PM

Location: BLOC 302

Speaker: T. Mandziuk

Title: Introduction to spectral sequences (following Griffiths-Harris)