Anisotropic estimates of subelliptic type
arXiv:1912.03541
Abstract
We discuss some estimates of subelliptic type related with vector fields satisfying the Hörmander condition. Our approach makes use of a class of approximate exponentials maps. Such kind of estimates arises naturally in the study of regularity theory of weak solutions of degenerate elliptic equations.
To appear on a special volume of Le Matematiche