关于希尔伯特空间中一些算子变换的新结果

Najla Altwaijry, Cristian Conde, Kais Feki, Hranislav Stanković
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引用次数: 0

摘要

在本文中,我们探讨了与希尔伯特空间上有界线性算子 T 相关的各种变换。这些变换包括 Aluthge、(\lambda \)-Aluthge、Duggal、广义均值和(\lambda \)-均值变换。我们的目的是研究 T 与这些变换之间的联系,重点是规范不等式和数值范围等方面,同时也强调某些基本性质。此外,我们还旨在确定在哪些条件下,算子 T 通过这些变换与其变换后的对应算子在规范上重合。我们还得出了一些特征和性质。
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New Results on Some Transforms of Operators in Hilbert Spaces

In this paper, we explore various transforms associated with a bounded linear operator T on a Hilbert space. These transforms include the Aluthge, \(\lambda \)-Aluthge, Duggal, generalized mean, and \(\lambda \)-mean transforms. Our aim is to investigate the connections between T and these transforms, focusing on aspects such as norm inequalities and numerical ranges, while also highlighting certain essential properties. Furthermore, we aim to determine the conditions under which an operator T coincides in norm with its transformed counterparts through these transformations. Several characterizations and properties are also derived.

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