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arXiv 2308.00545math.AP
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涉及非散度形式二阶椭圆算子的非线性 Gagliardo--Nirenberg 不等式

Non-linear Gagliardo--Nirenberg inequality involving a second-order elliptic operator in non-divergent form

Agnieszka Kałamajska, Dalimil Peša, Tomáš Roskovec

AI总结:

本文提出并证明了一种涉及非散度形式二阶椭圆算子的非线性 Gagliardo--Nirenberg 不等式,该不等式在有界 Lipschitz 区域上成立,并与概率论和势论中的 Douglas 公式变体相关联。

摘要:

我们得到了如下形式的不等式:$$\int_Ω|\nabla u(x)|^2h(u(x))\\,{\rm d} x\leq C\int_Ω \left( \sqrt{ |P u(x)||{\cal T}_{H}(u(x))|}\right)^{2}h(u(x))\\,{\rm d} x +Θ,$$ 其中 $Ω\subset \mathbf{R}^n$ 是有界 Lipschitz 区域,$u\in W^{2,1}_{\rm loc}(Ω)$ 非负,$P$ 是非散度形式的一致椭圆算子,${\cal T}_{H}(\cdot )$ 是单调 $C^1$ 函数 $H(\cdot)$ 的特定变换,而 $H(\cdot)$ 是权重 $h(\cdot)$ 的原函数,$Θ$ 是依赖于 $u$ 和 $\nabla u$ 边值的边界项,这些在额外假设下成立。我们的结果与概率论和势论的一些结果相关,例如与 Douglas 公式的某些变体相关。

英文摘要:

We obtain the inequalities of the form $$\int_Ω|\nabla u(x)|^2h(u(x))\,{\rm d} x\leq C\int_Ω \left( \sqrt{ |P u(x)||{\cal T}_{H}(u(x))|}\right)^{2}h(u(x))\,{\rm d} x +Θ,$$ where $Ω\subset \mathbf{R}^n$ is a bounded Lipschitz domain, $u\in W^{2,1}_{\rm loc}(Ω)$ is non-negative, $P$ is a uniformly elliptic operator in non-divergent form, ${\cal T}_{H}(\cdot )$ is certain transformation of the monotone $C^1$ function $H(\cdot)$, which is the primitive of the weight $h(\cdot)$, and $Θ$ is the boundary term which depends on boundary values of $u$ and $\nabla u$, which hold under some additional assumptions. Our results are linked to some results from probability and potential theories, e.g.~to some variants of the Douglas formulae.

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。

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