Modelos Estocásticos y Deterministas

Hitting probabilities for the stochastic heat equation
David Nualart (Kansas University)
Día: 24/04/2025
Hora: 16:00
Lugar: Dpt Matematiques, Seminari C3B (C3B/158)

Resum: We establish a new lower bound for the hitting probabilities associated to the stochastic heat equation. The proof is based on an approximation argument plus an estimate for the density of the supremum of the solution to the stochastic heat equation with additive noise.

Teoría de Anillos

Jordan homomorphisms
Matej Brešar (University of Ljubljana)
Día: 03/04/2025
Hora: 11:30
Lugar: Dpt Matematiques, Seminari C3B (C3B/158)

Web: Laboratori d'Interaccions entre Geometria, Àlgebra i Topologia

Resum: A Jordan homomorphism between associative rings is an additive map that preserves the Jordan product $xy+yx$. The study of this notion has a rich history, which will be presented in the first part of the talk. In the second part, some new results will be discussed.