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arXiv 2307.08855math.AP
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具有局部边界条件的非局部问题 I:函数空间与变分原理

Nonlocal problems with local boundary conditions I: function spaces and variational principles

James M. Scott, Qiang Du

AI总结:

本文研究带局部边界约束的非局部积分泛函及其诱导函数空间,证明极小元存在性与局部化极限下的变分收敛,并建立相关空间性质。

摘要:

我们系统研究了一类针对定义在有界域上函数的非局部积分泛函,及其自然诱导的函数空间。这些函数空间配有一个半范数,该半范数依赖于由位置相关函数加权的有限差分,从而导致域边界上的异质局部化。我们证明了具有经典定义的局部边界约束的非局部变分问题极小元的存在性,以及这些泛函在局部化极限中向经典对应物的变分收敛。该计划需要对非局部空间进行深入研究;我们展示了 Meyers-Serrin 定理、迹不等式和紧嵌入等性质,这些性质得益于对边界局部化卷积算子的新研究。

英文摘要:

We present a systematic study on a class of nonlocal integral functionals for functions defined on a bounded domain and the naturally induced function spaces. The function spaces are equipped with a seminorm depending on finite differences weighted by a position-dependent function, which leads to heterogeneous localization on the domain boundary. We show the existence of minimizers for nonlocal variational problems with classically-defined, local boundary constraints, together with the variational convergence of these functionals to classical counterparts in the localization limit. This program necessitates a thorough study of the nonlocal space; we demonstrate properties such as a Meyers-Serrin theorem, trace inequalities, and compact embeddings, which are facilitated by new studies of boundary-localized convolution operators.

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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