Abstract: The relationship between representation theory and the study of scattering amplitudes for scalar field theories started with the work of Arkani-Hamed, Bai, He and Yan, when they showed that the amplitudes for planar scalar field theories with cubic potential
Exposé virtuel. Attention à l'horaire inhabituel. Cluster complexes are a certain class of simplicial complexes that naturally arise in the theory of cluster algebras. They codify a wealth of fundamental information about cluster algebras. The purpose of this talk is
Résumé : La question qui nous intéresse est celle de comportement des racines de Frobenius quand le corps de base est fixe et le genre des courbes ou la dimension des variétés abéliennes tends vers infinie. J'expliquerai comment on peut
A Postnikov diagram is an embedding of oriented curves, called strands, in a disk. These diagrams are known to describe the cluster algebra structure of open positroid varieties, with diagrams of uniform type corresponding to a cluster of minors in
