# Colloquium: Amnon Besser (BGU): Fundamental groups, p-adic integrals, and rational points on the cursed curve

## Location:

Title:

Fundamental groups, p-adic integrals, and rational points on the cursed curve

2019
Nov
28

2:30pm to 3:30pm

Manchester Building (Hall 2), Hebrew University Jerusalem

Title:

Fundamental groups, p-adic integrals, and rational points on the cursed curve

2019
Aug
20

2:19pm to 3:19pm

2020
May
14

2019
Aug
19

2:00pm to 3:00pm

Ross 70

In the representation theory of reductive p-adic groups, a lot of general structure was developed by Bernstein: supercuspidal representations, cuspidal support, Bernstein components and so on.

2019
Aug
15

12:00pm to 1:00pm

Ross 70

Title: Applications of the Ky Fan inequality to random (and almost periodic) operators

Abstract: We shall discuss the Ky Fan inequality for the eigenvalues of the sum of two Hermitian matrices. As an application, we shall derive a sharp version of a recent result of Hislop and Marx pertaining to the dependence of the integrated density of states of random Schroedinger operators on the distribution of the potential. Time permitting, we shall also discuss an application to quasiperiodic operators.

Abstract: We shall discuss the Ky Fan inequality for the eigenvalues of the sum of two Hermitian matrices. As an application, we shall derive a sharp version of a recent result of Hislop and Marx pertaining to the dependence of the integrated density of states of random Schroedinger operators on the distribution of the potential. Time permitting, we shall also discuss an application to quasiperiodic operators.

2019
Aug
07

2:00pm to 3:00pm

Ross 70

Let G be the group SL(2) over a finite extension F of Q_p, p odd. For a fixed r ≥ 0, we identify the elements of the Bernstein center of G supported in the Moy-Prasad G-domain G_{r^+}, by characterizing them spectrally.

We study the behavior of convolution with such elements on orbital integrals of functions in C^∞_c(G(F)), proving results in the spirit of semisimple descent.

These are ‘depth r versions’ of results proved for general reductive groups by J.-F. Dat, R. Bezrukavnikov, A. Braverman and D. Kazhdan.

We study the behavior of convolution with such elements on orbital integrals of functions in C^∞_c(G(F)), proving results in the spirit of semisimple descent.

These are ‘depth r versions’ of results proved for general reductive groups by J.-F. Dat, R. Bezrukavnikov, A. Braverman and D. Kazhdan.

2019
Nov
14

2:30pm to 3:30pm

Manchester Building (Hall 2), Hebrew University Jerusalem

Title:

Curves with boundary: Can you count them? Can you really?

Abstract:

Curves with boundary: Can you count them? Can you really?

Abstract:

2019
Jul
31

2019
Jul
31

Prof. Mikhail Gromov (IHES, France and Courant Institute, New York University)

2:00pm to 3:30pm

Room B221, Rothberg Building, Jerusalem

2020
May
07

2021
May
09

Sun, 09/05/2021 (All day) to Fri, 14/05/2021 (All day)

Israel Institute for Advanced Studies, The Hebrew University of Jerusalem

2019
Aug
05

2019
Jul
10

2020
Jan
16

2:30pm to 3:30pm

Manchester Building (Hall 2), Hebrew University Jerusalem

2019
Jun
27

11:30am to 12:45pm

Abstract: Ratner's celebrated equidistribution theorem states that the trajectory of any point in a homogeneous space under a unipotent flow is getting equidistributed with respect to some algebraic measure. In the case where the action is horospherical, one can deduce an effective equidistribution result by mixing methods, an idea that goes back to Margulis' thesis. Read more about Groups and Dynamics seminar: Asaf Katz (Chicago) - An application of Margulis' inequality to effective equidistribution.

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