arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1408.0422math.APmath.CVmath.FA
收藏

一阶完全非线性椭圆型方程组整体解的存在唯一性

Existence and Uniqueness of Global Solutions to Fully Nonlinear First Order Elliptic Systems

Nikos Katzourakis

摘要:

设$F : \mathbb{R}^n \times \mathbb{R}^{N\times n} \rightarrow \mathbb{R}^N$为Caratheodory映射。本文考虑了弱可微整体强代数方程组的存在唯一性问题。当$ f\in L^2(\mathbb{R}^n)^N$时,将$u: \mathbb{R}^n \longrightarrow \mathbb{R}^N$解为完全非线性PDE系统\[\label{1} \tag{1} F(\cdot,Du ) \,=\, f, \ \ \text{ a.e. on }\mathbb{R}^n, \]。这个问题以前没有考虑过。通过引入适当的椭圆性概念,证明了\eqref{1}在一个裁剪的Sobolev“能量”空间(也称为J.L. Lions空间)和唯一性先验估计。证明是基于可解性的线性化问题的傅里叶变换方法和“扰动设备”,允许使用Campanato的概念,近运营商,一个想法开发的第二阶的情况下。

英文摘要:

Let $F : \mathbb{R}^n \times \mathbb{R}^{N\times n} \rightarrow \mathbb{R}^N$ be a Caratheodory map. In this paper we consider the problem of existence and uniqueness of weakly differentiable global strong a.e. solutions $u: \mathbb{R}^n \longrightarrow \mathbb{R}^N$ to the fully nonlinear PDE system \[\label{1} \tag{1} F(\cdot,Du ) \,=\, f, \ \ \text{ a.e. on }\mathbb{R}^n, \] when $ f\in L^2(\mathbb{R}^n)^N$. This problem has not been considered before. By introducing an appropriate notion of ellipticity, we prove existence of solution to \eqref{1} in a tailored Sobolev "energy" space (known also as the J.L. Lions space) and a uniqueness a priori estimate. The proof is based on the solvability of the linearised problem by Fourier transform methods and a "perturbation device" which allows to use of Campanato's notion of near operators, an idea developed for the 2nd order case.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑