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arXiv math/0411120math.APmath.CA
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Lipschitz域上椭圆型方程组的$L^p$狄利克雷问题

The $L^p$ Dirichlet Problem for Elliptic Systems on Lipschitz Domains

Zhongwei Shen

摘要:

通过$L^2$估计和反向Holder不等式,我们发展了一种求解$L^p$狄利克雷问题的新方法.我们将这种方法应用于二阶椭圆型方程和有界Lipschitz域上的多调和方程$R^n$中的$Ω$。对于$n\ge 4$和$2-ε<p<2(n-1)/(n-3)+ε$,我们在$L^p(\partialΩ)$中建立了带边值数据的狄利克雷问题的可解性.在具有$\ell\ge 2$的多调和方程$Δ^{\ell}u=0$的情况下,如果$4\le n \le 2\ell +1$,则$p$的范围是尖锐的。

英文摘要:

We develop a new approach to the $L^p$ Dirichlet problem via $L^2$ estimates and reverse Holder inequalities. We apply this approach to second order elliptic systems and the polyharmonic equation on a bounded Lipschitz domain $Ω$ in $R^n$. For $n\ge 4$ and $2-ε<p<2(n-1)/(n-3)+ε$, we establish the solvability of the Dirichlet problem with boundary value data in $L^p(\partialΩ)$. In the case of the polyharmonic equation $Δ^{\ell}u=0$ with $\ell\ge 2$, the range of $p$ is sharp if $4\le n \le 2\ell +1$.

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