Harnack inequality for a class of degenerate elliptic operators

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63818We prove a Harnack inequality for a class of two-weight degenerate elliptic operators. The metric distance is induced by continuous Grushin-type vector fields. It is not know whether there exist cutoffs fitting the metric balls. This obstacle is bypassed by means of a covering argument that allows the use of rectangles in the Moser iteration.Final version, to appear in Zeitschrift fuer Analysis und ihre AnwendungenAnalysis of PDEsFunctional Analysis35J70Harnack inequality for a class of degenerate elliptic operatorstext