3 papers
math.AP2016
estimates for the parallel refractor
Farhan Abedin, Cristian E. Gutierrez, Giulio Tralli
We consider the parallel refractor problem when the planar radiating source lies in a medium having higher refractive index than the medium in which the target is located. We prove…
math.AP2015
Wiener-type tests from a two-sided Gaussian bound
Ermanno Lanconelli, Giulio Tralli, Francesco Uguzzoni
In this paper we are concerned with hypoelliptic diffusion operators . Our main aim is to show, with an axiomatic approach, that a Wiener-type test of -re…
math.AP2013
A certain critical density property for invariant Harnack inequalities in H-type groups
Giulio Tralli
We consider second order linear degenerate-elliptic operators which are elliptic with respect to horizontal directions generating a stratified algebra of H-type. Extending a result…