Revisiting the sub- and super-solution method for the classical radial solutions of the mean curvature equation

Author:

Obersnel Franco1,Omari Pierpaolo1

Affiliation:

1. Dipartimento di Matematica e Geoscienze, Università degli Studi di Trieste , via A. Valerio 12/1 , 34127 Trieste , Italy

Abstract

Abstract This paper focuses on the existence and the multiplicity of classical radially symmetric solutions of the mean curvature problem: div v 1 + | v | 2 = f ( x , v , v ) in Ω , a 0 v + a 1 v ν = 0 on Ω , \left\{\begin{array}{ll}-\text{div}\left(\frac{\nabla v}{\sqrt{1+|\nabla v{|}^{2}}}\right)=f(x,v,\nabla v)& \text{in}\hspace{.5em}\text{Ω},\\ {a}_{0}v+{a}_{1}\tfrac{\partial v}{\partial \nu }=0& \text{on}\hspace{.5em}\partial \text{Ω},\end{array}\right. with Ω \text{Ω} an open ball in N {{\mathbb{R}}}^{N} , in the presence of one or more couples of sub- and super-solutions, satisfying or not satisfying the standard ordering condition. The novel assumptions introduced on the function f allow us to complement or improve several results in the literature.

Publisher

Walter de Gruyter GmbH

Subject

General Mathematics

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