arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.02324math.OAmath.FA
收藏

一类非交换空间上等距性研究中的极值点方法

Extreme point methods in the study of isometries on certain non-commutative spaces

Pierre de Jager, Jurie Conradie

摘要:

本文刻画了与半有限von Neumann代数相关的一类非交换空间:Lorentz空间$L^{w,1}$,以及空间$L^1+L^\infty$和$L^1\cap L^\infty$上的满射等距.在所有三种情况下使用的技术依赖于这些空间的单位球的极值点的特征。特别有趣的是,本文中得到的等距的表示是整体表示。

英文摘要:

In this paper we characterize surjective isometries on certain classes of non-commutative spaces associated with semi-finite von Neumann algebras: the Lorentz spaces $L^{w,1}$, as well as the spaces $L^1+L^\infty$ and $L^1\cap L^\infty$. The technique used in all three cases relies on characterizations of the extreme points of the unit balls of these spaces. Of particular interest is that the representations of isometries obtained in this paper are global representations.

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。

↑