Similarities involving unbounded normal operators

Mohammed Hichem Mortad

doi:10.21099/tkbjm/1283967412

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Home > Journals > Tsukuba J. Math. > Volume 34 > Issue 1 > Article

August 2010 Similarities involving unbounded normal operators

Mohammed Hichem Mortad

Tsukuba J. Math. 34(1): 129-136 (August 2010). DOI: 10.21099/tkbjm/1283967412

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Abstract

We prove and disprove some generalizations of a result about some similarities involving normal operators due to M. R. Embry in 1970. Some interesting consequences are also given.

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Mohammed Hichem Mortad. "Similarities involving unbounded normal operators." Tsukuba J. Math. 34 (1) 129 - 136, August 2010. https://doi.org/10.21099/tkbjm/1283967412

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Published: August 2010

First available in Project Euclid: 8 September 2010

zbMATH: 1206.47006

MathSciNet: MR2723728

Digital Object Identifier: 10.21099/tkbjm/1283967412

Subjects:

Primary: 47A05

Secondary: 47A12 , 47B15

Keywords: Bounded and Unbounded Operators , commutativity , Fuglede-Putnam theorem , Hilbert space , normal operators , numerical range , spectral projections

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Department of Mathematics, University of Tsukuba

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Mohammed Hichem Mortad "Similarities involving unbounded normal operators," Tsukuba Journal of Mathematics, Tsukuba J. Math. 34(1), 129-136, (August 2010)

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