Seminars Sorted by Series

In the lecture I will explain how various fundamental structures from group representation theory appear naturally in the context of discrete harmonic analysis and can be applied to solve concrete problems from digital signal processing. We will...

Let s(n) denote the sum of the proper divisors of the natural number n. We call n *perfect* if n = s(n) and *amicable* if n = s(s(n) . We discuss some old problems and recent results related to perfect numbers, amicable numbers, and their...

In this short talk I will formulate a functorial desingularization theorem for qe schemes of characteristic zero and explain why this result implies desingularization in other categories including formal schemes and analytic spaces. If time permits...

I will discuss the relation between: (a) the Weak Regularity Lemma of Frieze and Kannan, a result in graph theory, (b) the "Dense Model Theorem" of Green, Tao and Ziegler, a result in additive combinatorics, that helps transfer results about dense...

In this talk we discuss certain interrelations between symplectic and convex geometry. No previous knowledge is assumed.

I'll describe joint work (in progress) with Ghaith Hiary on implementing and running Hiary's O(t^1/3) algorithm for computing the zeta function and give some highlights of recent computations.

I will introduce some example of models of Statistical Mechanics that are called 'weak-universal' and I will discuss the role of the extended scaling relations for the critical indexes. Finally I will mention some results and some works in progress...

We will explain the equivalences between p-adic Galois representations and various types of (\varphi,\Gamma)-modules.

I will discuss the problem of approximating a given positive semidefinite matrix A , written as a sum of outer products vv^T , by a much shorter weighted sum in the same outer products. I will then mention an application to sparsification of finite...