2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/173981We obtain several extensions of Talagrand's lower bound for the small deviation probability using metric entropy. For Gaussian processes, our investigations are focused on processes with sub-polynomial and, respectively, exponential behaviour of covering numbers. The corresponding results are also proved for non-Gaussian symmetric stable processes, both for the cases of critically small and critically large entropy. The results extensively use the classical chaining technique; at the same time they are meant to explore the limits of this method.to appear in: Stochastic Processes and Their ApplicationsProbabilitytext