The 2018 distinguished lecture series was given by Professor Barry Simon (California Institute of Technology) – January 8-10. More information on the distinguished lecture series Poster
Colloquium: Monday, December 11, 4 pm. Speaker: Shira Zerbib (Michigan). Title: “Colorful coverings of polytopes – the hidden topological truth behind different colorful phenomena”.
The topological KKMS Theorem is a powerful extension of the Brouwer’s Fixed-Point Theorem, which was proved by Shapley in 1973 in the context of game theory. We prove a colorful and polytopal generalization of the KKMS Theorem, and show that…
Colloquium: Monday, December 4, 4 pm. Speaker: Yochay Jerby (Hebrew University). Title: “Fermat’s last theorem – an elementary approach”.
The aim of this talk is to present an elementary approach to Fermat’s last theorem. We translate the condition of (x,y,z) being solution of Fermat’s equation x^n+y^n=z^n to a robust system of p-adic recursion relations (to which we refer as…
Colloquium: Monday, November 27, 4 pm. Speaker: Stuart W. Margolis (Bar Ilan). Title: “CW-decompositions, Leray numbers and the representation theory and cohomology of left regular band algebras”.
Over the last 15 years, it has been noted that many combinatorial structures, such as real and complex hyperplane arrangements, interval greedoids, matroids, oriented matroids, and others have the structure of a left regular band, a certain kind of finite monoid….
We give two simple generalizations of commutative rings. They form (co)-complete categories, that contain commutative (semi-) rings (e.g. f0; 1g ⊆ [0; 1] ⊆ [0; 1) with the usual multiplication x + y := maxfx; yg). But they also contains…
Colloquium: Monday, November 13, 4 pm. Speaker: Arielle Leitner (Technion). Title: “Introduction to Geometric Structures and Classification of Generalized Cusps on Convex Projective Manifolds”.
The first part of the talk will be an introduction to geometric structures in the sense of Thurston. We will also review a bit of projective geometry, and take a virtual tour with computer visualizations through some interesting types of…
Colloquium: Monday, November 6, 4 pm. Speaker: John Klein (Wayne State Univ.). Title: “Variations on a duet of Kirchhoff and Boltzmann”.
The Kirchhoff and Boltzmann distributions date back to the nineteenth century, dealing respectively with the flow of electrical current in a circuit and with the distribution of particles in a gas. I will show how both can be derived as…
Colloquium: Monday, October 30, 4 pm. Speaker: Yuval Ginosar (Haifa). Title: “Extensions and Obstructions”.
Let N be a normal subgroup of a group G. When does a homomorphism from N to an abelian group A extend to a homomorphism from G to A? When does an irreducible (projective) representation f of N extend to…
Colloquium: Tuesday, June 13, 2 pm. Speaker: Gal Binyamini (Weizmann). Title: “Differential equations and algebraic points on transcendental varieties”.
The problem of bounding the number of rational or algebraic points of a given height in a transcendental set has a long history. In 2006 Pila and Wilkie made fundamental progress in this area by establishing a sub-polynomial asymptotic estimate…
Colloquium: Tuesday, June 6, 2 pm. Speaker: Jonathan Breuer (Hebrew University). Title: “To infinity and back (a bit)”.
Let H be a self-adjoint operator defined on an infinite dimensional Hilbert space. Given some spectral information about H, such as the continuity of its spectral measure, what can be said about the asymptotic spectral properties of its finite dimensional…