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Pták, Vlastimil
The spectral radii of an operator and its modulus. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 17 (1976), issue 2, pp. 273-279
MSC: 15A18, 15A42, 15A60, 47A10, 47B15 | MR 0410416 | Zbl 0332.15003
References:
[1] DANIEL J. W., PALMER T. W.: On $\sigma (T), \|T\| and \|T^{-1}\|$. Linear Algebra and its Applications 2 (1969), 381-386. MR 0251561 | Zbl 0205.04902
[2] YOUNG N. J.: Analytic programmes in matrix algebras. (in print). Zbl 0379.65023
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