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Aluthge变换的本性极大数值域 被引量:1

Essential maximal numerical range of the Aluthge transform
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摘要 设H为无限维Hilbert空间,T为H中的有界线性算子,Tt,Tt(*)分别表示T的广义Aluthge变换和广义*-Aluthge变换,t∈(0,1).利用算子分块技巧,研究Tt和Tt(*)的本性范数的关系,给出了t=1/2时,Tt与Tt(*)的本性极大数值域关系的表示. Let Hbe infinite Hilbert space,for any bounded linear operator Tin H,denoted by Tt,Tt(*) the generalized Aluthge transform and generalized *-Aluthge transform of T respectively,wheret∈(0,1).By the method of operational partitioning,the relationship of the essential norm between Tt and Tt(*)was given.Also,the essential maximal numerical rang of Tt and Tt(*)was discussed for t=1/2.
作者 刘妮 李炳杰
出处 《安徽大学学报(自然科学版)》 CAS 北大核心 2016年第2期9-13,共5页 Journal of Anhui University(Natural Science Edition)
基金 国家自然科学基金青年科学基金资助项目(11001159)
关键词 广义ALUTHGE变换 极分解 本性谱 本性极大数值域 the generalized Aluthge transform polar decomposition essential spectrum essential maximal numerical range
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