New formulas for the spectral radius via λ-Aluthge transform
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- 作者：Fadil Chabbabi Fadil.Chabbabi@Math.univ-lille1.fr ; Mostafa Mbekhta ; Mostafa.Mbekhta@math.univ-lille1.fr
- 关键词：47A13 ; 47A30 ; 47B37
- 刊名：Linear Algebra and its Applications
- 出版年：2017
- 出版时间：15 February 2017
- 年：2017
- 卷：515
- 期：Complete
- 页码：246-254
- 全文大小：244 K
- 卷排序：515
文摘
In this paper we give several expressions of spectral radius of a bounded operator on a Hilbert space, in terms of iterated λ-Aluthge transform, numerical radius and the asymptotic behavior of the powers of this operator.We also obtain several characterizations of normaloid operators.