19 Gennaio, 2004 17:00
Seminario Matematico e Fisico di Milano
Characterization of sub-Gaussian heat kernel estimates on strongly recurrent graphs
Thierry Coulhon, Université de Cergy-Pontoise (Cergy, France)
Dipartimento di Matematica - Università degli Studi - Via Saldini 50 - Milano - Sala di Rappresentanza
Abstract
Sub-Gaussian estimates for random walks are typical of fractal graphs. We characterize them in the strongly recurrent case, in terms of resistance estimates only, without assuming elliptic Harnack inequalities. This is a joint work with Martin Barlow and Takashi Kumagai.