Characterizations of EP and normal Banach algebra elements and Banach space operators |
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| Authors: | Enrico Boasso Vladimir Rakocevic |
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| Institution: | a Via Cristoforo Cancellieri 2, 34137 Trieste (TS), Italy
b University of Nis, Faculty of Sciences and Mathematics, Visegradska 33, 18000 Nis, Serbia |
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| Abstract: | Several characterizations of EP and normal Moore-Penrose invertible Banach algebra elements will be considered. The Banach space operator case will be also studied. The results of the present article will extend well known facts obtained in the frames of matrices and Hilbert space operators. |
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| Keywords: | 15A09 47A05 |
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