First we prove a comparison result for a nonlinear divergence structure elliptic partial differential equation. Next we find an estimate of the solution of a boundary value problem in a domain Omega in terms of the solution of a related symmetric boundary value problem in a ball B having the same measure as Omega. For p Laplace equations, the corresponding result is due to Giorgio Talenti. In a special (radial) case we also prove a reverse comparison result.

Comparison results for nonlinear divergence structure elliptic PDE's

Marras M.;
2019-01-01

Abstract

First we prove a comparison result for a nonlinear divergence structure elliptic partial differential equation. Next we find an estimate of the solution of a boundary value problem in a domain Omega in terms of the solution of a related symmetric boundary value problem in a ball B having the same measure as Omega. For p Laplace equations, the corresponding result is due to Giorgio Talenti. In a special (radial) case we also prove a reverse comparison result.
2019
Comparison results; Quasi-linear equations; Symmetrization
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/275009
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