arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2605.00530math.FA
收藏

紧凑线性算子插值的一个新方法

A new approach to interpolation of compact linear operators

Technion - Israel Institute of Technology(以色列理工学院)

Evgeniy Pustylnik

AI总结:

本文提出通过构造特殊子空间和嵌入算子来保持算子的紧性,利用反证法简化证明过程,最终得出插值理论中的关键结论。

摘要:

我们证明了一个关于在Banach空间中保持线性算子紧性性质的抽象定理。我们的方法包含两个特点:应用“归谬法”原则,我们能够仅对某些特殊构造的子空间(例如具有公共Schauder基)进行证明;其次,在所有断言中仅考虑嵌入算子,最终在论文末尾得出完整结果。不需要对算子、空间和插值functor进行分析性呈现,复杂方法可作为特殊情况接受。

英文摘要:

We prove an abstract theorem on keeping the compactness property of a linear operator after interpolation in Banach spaces. Our approach consists of two features. Applying the principle "reductio ad absurdum," we obtain a possibility to carry out all proofs only for some specially constructed subspaces of the given spaces, e.g., having a common Schauder basis. As a second feature, we consider in all assertions only embedding operators obtaining the full result just at the end of the paper. No analytical presentation of operators, spaces and interpolation functors is required and the complex method is admissible as a particular 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。

↑