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Factorizations of EP operators |
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| Authors: | Dimosthenis Drivaliaris Sotirios Karanasios |
| Institution: | a Department of Financial and Management Engineering, University of the Aegean, 31 Fostini Str., 82100 Chios, Greece b Department of Mathematics, National Technical University of Athens, Zografou Campus, 15780 Zografou, Greece c Department of Statistics and Insurance Science, University of Piraeus, 80 Karaoli & Dimitriou Str., 18534 Piraeus, Greece |
| Abstract: | In this paper we characterize EP operators through the existence of different types of factorizations. Our results extend to EP operators existing characterizations for EP matrices and give new characterizations both for EP matrices and EP operators. |
| Keywords: | 47A05 15A09 47B |
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