Regularity at the boundary for solutions of nonlinear subelliptic equations
Donatella Danielli · Indiana University Mathematics Journal · 1995
In this article we establish an estimate, in terms of subelliptic p-capacity, for the modulus of continuity at the boundary of the solution to the Dirichlet problem associated to a class of subelliptic quasilinear equations.We infer from it the sufficiency part of a Wiener type criterion for the regularity of boundary points.