Solvability of quasilinear elliptic equations with strong dependence on the gradient

Abstract

We study the problem of existence of positive, spherically symmetric strong solutions of quasilinear elliptic equations involving $p$-Laplacian in the ball. We allow simultaneous strong dependence of the right-hand side on both the unknown function and its gradient. The elliptic problem is studied by relating it to the corresponding singular ordinary integro-differential equation. Solvability range is obtained in the form of simple inequalities involving the coefficients describing the problem. We also study a posteriori regularity of solutions. An existence result is formulated for elliptic equations on arbitrary bounded domains in dependence of outer radius of domain.