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极分解与广义*-Aluthge变换

Polar Decomposition and Generalized *-Aluthge Transformation
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摘要 首先给出了Hilbert空间上有界线性算子极分解的的若干性质.其次指出广义的*-Aluthge变换与*-Aluthge变换具有许多相似性质;例如,T_(α,β)^((*))=U|T_(α,β)^((*))|当且仅当T是双正规的,即[|T|,|T*|]=0,其中对任意两个算子A和B,[A,B]=AB-BA. In this paper, firstly, we give some properties for the polar decomposition of a bounded linear operator. Secondly, we show that the generalized ,-Aluthge transformation has some similar properties as *-Aluthge transformation; for example, T(α,β)=((*))=U|T(α,β) if and only if T is binormal, i.e., [|T|,|T*|]=0, where [A, B]=AB - BA for any operator A and B.
出处 《数学的实践与认识》 CSCD 北大核心 2013年第11期221-225,共5页 Mathematics in Practice and Theory
基金 教育部科技司重点项目(208081) 河南省基础与前沿技术项目(102300410012) 河南省科技计划项目(114200510011) 国家自然科学基金(11271112 11201127)
关键词 *-Aluthge变换 ALUTHGE变换 极分解 双正规算子 *-Aluthge transformation Aluthge transformation polar decomposition binormal operators
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参考文献12

  • 1Aluthge A. On p-hyponormal operators for 0 < p < l[J]. Integral Equations Operator Theory, 1990, 13: 307-315.
  • 2Yamazaki T. Parallelism between Aluthge transformation and powers of operators[J]. Acta Sci Math(Szeged), 2001, 67: 809-820.
  • 3Jung I B, Ko E, Pearcy C. Aluthge transformation of operators[J]. Integral Equations Operator Theory, 2000, 37: 437448.
  • 4Campbell S L. Linear operators for which T*T and TT* commute[J]. Proc Amer Math Soc, 1972, 34: 177-180.
  • 5Campbell S L. Linear operators for which T*T and TT* commute II[J]. Pacific J Math, 1974, 53: 355-361.
  • 6Morrel B B, Muhly P S. Centered operators[J]. Studia Math, 1974, 51: 251-263.
  • 7Paulsen V, Pearcy C. Petrovid, S.: On centered and weakly centered operators[J]. J Func Anal, 1995, 128: 87-101.
  • 8Ito M, Yamazaki T, Yanagida M. On the polar decomposition of the Aluthge transformation and related results[J1. J Operator Theory, 2004, 51: 303-319.
  • 9Furuta T. Invitation to Linear Operators[M]. Taylor & Francis, London, 2001.
  • 10Chang Sen YANG Yan Feng DING.Binormal Operator and *-Aluthge Transformation[J].Acta Mathematica Sinica,English Series,2008,24(8):1369-1378. 被引量:1

二级参考文献13

  • 1Aluthge, A.: On p-hyponormal operators for 0 < p < 1. Integral Equations Operator Theory, 13, 307-315 (1990)
  • 2Yamazaki, T.: Parallelism between Aluthge transformation and powers of operators. Acta Sci. Math. (Szeged), 67, 809-820 (2001)
  • 3Jung, I. B., Ko, E., Pearcy, C.: Aluthge transformation of operators. Integral Equations Operator Theory, 37, 437-448 (2000)
  • 4Campbell, S. L.: Linear operators for which T*T and TT* commute. Proc. Amer. Math. Soc., 34, 177-180 (1972)
  • 5Campbell, S. L.: Linear operators for which T*T and TT* commute. II. Pacific J. Math., 53, 355-361 (1974)
  • 6Morrel, B. B., Muhly, P. S.: Centered operators. Studia Math., 51, 251-263 (1974)
  • 7Paulsen, V., Peaxcy, C., Petrovic, S.: On centered and weakly centered operators. J. Func. Anal., 128, 87-101 (1995)
  • 8Ito, M., Yamazaki, T., Yanagida, M.: On the polar decomposition of the Aluthge transformation and related results. J. Operator Theory, 51, 303-319 (2004)
  • 9Furuta, T.: Invitation to linear operators. Taylor &5 Francis, London, 2001
  • 10Miyajima, S., Saito, I.: ∞-hyponormal operators and their spectral properties. Acta Sci. Math. (Szeged), 67, 357-371 (2001)

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