Local functional equations of homaloidal polynomials

Date/heure
27 mars 2018
16:15 - 17:15

Oratrice ou orateur
Takeyoshi Kogiso

Catégorie d'évènement
Séminaire Théorie de Lie, Géométrie et Analyse


Résumé

An identity that relates the Fourier transform of a complex power of homogeneous polynomial functions on a real vector space with a complex power of homogenous polynomial functions on the dual vector space is called a local functional equation. A rich source of polynomials satisfying local functional equations is the theory of prehomogeneous vector spaces. Almost all known examples of local functional equations are of this type. However recently local functional equations of non- prehomogeneous type are found. In this talk we present new examples of non-prehomogeneous polynomials satisfying a local functional equation. More precisely we prove a local functional equation for the polarization of an arbitrary homaloidal polynomial, and calculate the associated b-function identities explicitly.