AVVISO DI SEMINARIO
Il giorno 3-7-2018 alle ore 14:30 in aula 3014, presso il Dipartimento di Matematica e Applicazioni dell'Università di Milano-Bicocca, il prof.Wolfgang Woess della Technische Universitaet di Graz, terrà un seminario dal titolo "Heat kernel oscillations for isotropic random processes on ultrametric spaces"
Abstract: The family of hierarchical Laplacians on an ultrametric space is introduced and the associated isotropic semigroups of Markov transition operators are displayed. Focussing on the space-homogeneous situation, typical classes of such processes and operators are studied in more detail, where the return probabilities exhibit periodic oscillations. This comprises the operator fractional derivative (Taibleson Laplacian) on the p-adic numbers and random walks on locally finite groups such as the infinite sum of copies of a finite group and the infinite symmetric group. This is joint work with Alexander Bendikov (Wroclaw) and Wojciech Cygan (Wroclaw and Graz), based on previous joint work with Bendikov and Alexander Grigor'yan (Bielefeld).
Tutti gli interessati sono invitati a partecipare.