# Colloquium

 Orateur(s) Maxim Kontsevich - IHES, Titre Exponential integrals in finite and infinite dimensions Date 05/02/2015 Horaire 17:00 à 18:00 Résume I'll review wall-crossing formalism (related to Stokes phenomenon) for the integrals of exp(f/h) where f is a complex polynomial in several variables, and h is a non-zero parameter thought of as a "Planck constant". The formalism makes sense in infinite dimensions whereas the integration is not defined. As an application one obtains Gaiotto-Moore-Neitzke construction of solutions of algebraic linear differential equations with small parameter. Salle Adresse