Zoom link: https://u-paris.zoom.us/j/87632342205?pwd=VXc1cWtNbDdibVFiNWZGL3ViakhMZz09In this course I plan to discuss square-tiled surfaces and interval exchange transformations from unusual angle, focusing on their geometric and combinatorial aspects. As a teaser I will describe a solution of an old problem of Vladimir Arnold on asymptotic statistics of transitive permutations among random int...
AbstractWe introduce certain class of quadratic algebras together with commutative subalgebras generated by additive and multiplicative Dunkl elements correspondingly. We identify these subalgebras with cohomology and K-theories of type A flag varieties. We show that value of Schubert polynomials on additive Dunkl elements is a generating function for the corresponding Littlewood-Richardson coe...