Midrasha
I am the organizer of the Midrasha, a seminar at Weizmann of the research groups of Uri Bader, Tsachik Gelander, and Alex Lubotzky.
The Midrasha takes place on Mondays in two sessions:
Β Β Morning session (11:15β13:00) β research seminar (Goldsmith, Room 208),
Β Β Afternoon session (14:15β16:00) β learning seminar (Zisking, Room 1).Β
Check out our website for more details!
Learning Seminar Topics
Our learning seminar this semester will be exceptional. The primary speaker will be Alex Lubotzky. He will focus on various topics ranging from expanders and Ramanujan graphs to property testing, locally testable codes, stability, group approximation, and soficity. Above all, he will focus on the connection between them.
Seminar Structure: Alex Lubotzky will be the speaker in alternating weeks, providing the big picture, the overarching concepts, and the main insights. During the intervening weeks, other participants will present talks that may involve proving theorems mentioned by Alex, exploring specific examples in greater depth, etc.
Session Schedule: We have adjusted the session times to accommodate our computer science friends since some of these topics interest them. The morning session (11:15β13:00) will now serve as our research seminar, while the afternoon session (14:15β16:00) will feature our learning seminar.
Venue: We have secured Room 1 in Ziskind, anticipating a larger-than-usual audience. However, our morning session (research seminar) will be in the usual Room 208 in Goldsmith, as in previous semesters.
Spring 2024
Expanders, Ramanujan Graphs, Property Testing, Stability, and Group Approximation
First meeting: April 8, 2024.
Winter 2023β2024
The Spectrum of Hyperbolic Surfaces
First meeting: December 11, 2023.
Main reference: Β Bergeron. The spectrum of hyperbolic surfaces. Translated from the 2011 French original by Brumley. Universitext. Springer, 2016.
War 2023
Coxeter Groups and buildings
First meeting: October 30, 2023.
Main reference: Β Thomas. Geometric and topological aspects of Coxeter groups and buildings. Lecture Notes, 2016.
Spring 2023
Hyperoblic Geometry
Main reference:Β Β Benedetti and Petronio. Lectures on hyperbolic geometry. Universitext. Springer-Verlag, Berlin, 1992
Fall 2022β2023
Harmonic Analysis
Main reference:Β Β Folland. A course in abstract harmonic analysis. Second edition. Textbooks in Mathematics. CRC Press, Boca Raton, FL, 2016.