arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1510.03472math.OAmath.FA
收藏

$L_1$ -与von Neumann algebra有关联的positive operator的空间

$L_1$-space for a positive operator affiliated with von Neumann algebra

Andrej Novikov

摘要:

本文提出了一种构造隶属于von Neumann代数的正自伴算子的L1型空间的方法。对于这类算子,我们引入了一个范数,并证明了它是一个范数当且仅当该算子是单射的。在此范数下,我们构造了一个L1型空间作为vonNeumann代数上Hermitian超弱连续线性泛函空间的补集,并将L1型空间表示为特殊半双线性型空间上的连续线性泛函空间.同时,我们还以一种自然的方式证明了L1 -型空间与von Neumann代数的预对偶是等距同构的。我们给出了一个小列表的替代定义的代数,和一个特殊的定义的情况下,半有限冯诺依曼代数,特别是。研究了L1型空间的序性质,证明了半有限正规权与该空间的正元素之间的关系。最后,我们为C* 代数的正元素构造了一个相似的L-空间,并研究了当这个C* 代数是vonNeumann代数时,这个L-空间与L1 -型空间之间的关系。

英文摘要:

In this paper we suggest an approach for constructing an L1-type space for a positive selfadjoint operator affiliated with von Neumann algebra. For such operator we intro- duce a seminorm, and prove that it is a norm if and only if the operator is injective. For this norm we construct an L1 -type space as the complition of the space of hermitian ultraweakly continuous linear functionals on von Neumann algebra, and represent L1- type space as a space of continuous linear functionals on the space of special sesquilinear forms. Also, we prove that L1 -type space is isometrically isomorphic to the predual of von Neumann algebra in a natural way. We give a small list of alternate definitions of the seminorm, and a special definition for the case of semifinite von Neumann algebra, in particular. We study order properties of L1-type space, and demonstrate the con- nection between semifinite normal weights and positive elements of this space. At last, we construct a similar L-space for the positive element of C*-algebra, and study the connection between this L-space and the L1 -type space in case when this C*-algebra is a von Neumann algebra.

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。

↑