2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157862Estimates of densities of convolution semigroups of probability measures are given under specific assumptions on the corresponding Lévy measure and the Lévy--Khinchin exponent. The assumptions are satisfied, e.g., by tempered stable semigroups of J. Rosi{ń}ski.ProbabilityFunctional Analysis60G51, 60E07text