中文

容许不连续导子的里德巴拿赫空间的扩张与弱卡尔金代数

泛函分析 2016-09-05 v3

摘要

里德给出了首个巴拿赫空间 ERE_{\text{R}} 的例子,使得相关的有界算子巴拿赫代数 B(ER)\mathscr{B}(E_{\text{R}}) 容许一个不连续导子(J. London Math. Soc. 1989)。我们通过构造一个强分裂正合列 {0} --> W(ER)\mathscr{W}(E_{\text{R}}) --> B(ER)\mathscr{B}(E_{\text{R}})--> 2~\tilde{\ell_2}-->{0},推广了里德关于 B(ER)\mathscr{B}(E_{\text{R}}) 的主要定理(他由此得出结论),以及其证明所依赖的关键技术引理,其中 W(ER)\mathscr{W}(E_{\text{R}}) 表示 ERE_{\text{R}} 上的弱紧算子理想,而 2~\tilde{\ell_2} 是希尔伯特空间 2\ell_2 的单位化,赋予零乘积。

关键词

引用

@article{arxiv.1602.08963,
  title  = {Extensions and the weak Calkin algebra of Read's Banach space admitting discontinuous derivations},
  author = {Niels Jakob Laustsen and Richard Skillicorn},
  journal= {arXiv preprint arXiv:1602.08963},
  year   = {2016}
}

备注

11 pages. This article was originally part of a single longer paper (arXiv:1409.8203v1), which we have subsequently split into two essentially disjoint parts to comply with publishers' page limits: arXiv:1409.8203v2 and the present one. Thus arXiv:1409.8203v1 is now superseded. pp 2-3 now include an expanded account of how Theorem 1.1 and Theorem 1.2 relate. To appear in Studia Mathematica