2019 Dec 09

NT Seminar - Eyal Kaplan

2:30pm to 3:30pm

Location:

Ross 70

Title: The generalized doublingmethod and its applications
Abstract: The doubling method,first introduced by Piatetski-Shapiro and Rallis in the 80s, has had numerousapplications, e.g. to the theta correspondence and to arithmetic problems.In a series of recent works this method was generalized in severalaspects, with an application to functoriality from classical groups to GL(N).The most recent result is a multiplicityone theorem (joint work with Gourevitch and Aizenbud).
I will brieflysurvey the method and talk about some of its applications.
2019 Nov 11

NT & AG Lunch: Michael Temkin, "Resolution of singularities, II"

1:00pm to 2:00pm

Location:

Mathematics, Faculty Lounge
This semester will be devoted to resolution of singularities -- a process that modifies varieties at the singular locus so that the resulting variety becomes smooth. For many years this topic had the reputation of very technical and complicated, though rather elementary.
In fact, the same resolution algorithm can be described in various settings, including schemes, algebraic varieties or complex analytic spaces.
2019 Nov 18

NT Seminar - Zev Rosengarten

2:30pm to 3:30pm

Location:

Ross 70
Title: Mordell-Lang and Integral Points on Abelian Varieties in Characteristic p
2019 Nov 11

NT Seminar - Katharina Hübner

2:30pm to 3:30pm

Location:

Ross 70
Title: The tame site
2019 Nov 04

NT & AG Lunch: Michael Temkin, "Resolution of singularities"

Repeats every week every Monday until Sun Dec 15 2019 .
1:00pm to 2:00pm

1:00pm to 2:00pm
1:00pm to 2:00pm
1:00pm to 2:00pm
1:00pm to 2:00pm
1:00pm to 2:00pm

Location:

Mathematics, Faculty Lounge
This semester will be devoted to resolution of singularities -- a process that modifies varieties at the singular locus so that the resulting variety becomes smooth. For many years this topic had the reputation of very technical and complicated, though rather elementary.
In fact, the same resolution algorithm can be described in various settings, including schemes, algebraic varieties or complex analytic spaces.
2019 Aug 19

NT & AG Seminar: Maarten Solleveld (Radboud) "Cuspidal Langlands parameters"

2:00pm to 3:00pm

Location:

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 07

NT & AG Seminar: Sandeep Varma "Bernstein projectors for SL(2)"

2:00pm to 3:00pm

Location:

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.
2019 Jun 17

NT & AG Lunch: Michael Temkin "The explicit local and global class field theory"

1:00pm to 2:00pm

Location:

Faculty lounge

I will finish the theory of Lubin-Tate, and start the last topic of this series
-- Drinfeld's elliptic modules and CFT of function fields.
2019 Jun 26

Minicourse: Jared Weinstein (Boston University "Geometrization of the local Langlands program"

2:00pm to 4:00pm

Location:

Ross 70
Prof. Jared Weinstein (Boston University) will give a series of 3 talks titled
"Geometrization of the local Langlands program"
2019 Jun 30

Minicourse: Jared Weinstein (Boston University "Geometrization of the local Langlands program"

2:00pm to 4:00pm

Location:

Ross 70
Prof. Jared Weinstein (Boston University) will give a series of 3 talks titled
"Geometrization of the local Langlands program"
2019 Jul 01

Minicourse: Jared Weinstein (Boston University "Geometrization of the local Langlands program"

2:00pm to 4:00pm

Location:

Ross 70
Prof. Jared Weinstein (Boston University) will give a series of 3 talks titled
"Geometrization of the local Langlands program"
2019 Jun 03

NT & AG Seminar: Shuddhodan K V (HUJI) "Self maps of varieties over finite fields"

2:30pm to 3:30pm

Location:

Ross building 70
Title: Title: Self maps of varieties over finite fields
Abstract: Esnault and Srinivas proved that as in Betti cohomology over the complex numbers, the value of the entropy of an automorphism of a smooth proper surface over a finite field $\F_q$ is taken in the subspace spanned by algebraic cycles inside $\ell$-adic cohomology. In this talk we will discuss some analogous questions in higher dimensions motivated by their results and techniques.
2019 Jun 03

NT & AG Lunch: Michael Temkin "The explicit local class field theory"

1:00pm to 2:00pm

Location:

Faculty lounge, Math building

I'll tell a couple of anecdotes related to imaginary quadratic fields
(e.g. primes in the sequence n^2+n+41), and then open a new story --
local CFT and the explicit construction of K^ab due to Lubin-Tate.
2019 May 13

NT & AG Lunch: Michael Temkin "Elliptic curves with complex multiplication, II"

1:00pm to 2:00pm

Location:

Faculty lounge, Math building
We'll talk about explicit class field theory of imaginary quadratic fields