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arXiv 2502.03216math.APmath.FA
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具有非局部Wentzell-Robin边界条件的椭圆算子

Elliptic operators with non-local Wentzell-Robin boundary conditions

Markus Kunze, Jonathan Mui, David Ploss

AI总结:

本文研究带非局部Wentzell-Robin边界条件的二阶椭圆算子,证明其在L^2空间和连续函数空间上生成强连续半群,并刻画了半群的正性、Markov性、渐近行为及最终正性。

摘要:

本文研究定义在$\mathbb{R}^d$中有界Lipschitz域上的严格椭圆二阶微分算子,并赋予其特定的非局部Wentzell-Robin边界条件。我们证明此类算子在$L^2$空间和连续函数空间上生成强连续半群。同时,我们给出了这些半群的正性以及(次)Markov性的刻画。此外,基于对这些算子的谱分析,我们进一步讨论了半群的其他性质,例如渐近行为,以及在半群非正的情形下,半群最终正性这一较弱的概念。

英文摘要:

In this article, we study strictly elliptic, second-order differential operators on a bounded Lipschitz domain in $\mathbb{R}^d$, subject to certain non-local Wentzell-Robin boundary conditions. We prove that such operators generate strongly continuous semigroups on $L^2$-spaces and on spaces of continuous functions. We also provide a characterisation of positivity and (sub-)Markovianity of these semigroups. Moreover, based on spectral analysis of these operators, we discuss further properties of the semigroup such as asymptotic behaviour and, in the case of a non-positive semigroup, the weaker notion of eventual positivity of the semigroup.

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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