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On Drazin inverse of operator matrices |
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| Authors: | Aleksandar S Cvetkovi? Gradimir V Milovanovi? |
| Institution: | a Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, P.O. Box 224, Niš, Serbia b Megatrend University, Faculty of Computer Sciences, Bulevar Umetnosti 29, 11070 Novi Beograd, Serbia |
| Abstract: | In this short paper, we offer (another) formula for the Drazin inverse of an operator matrix for which certain products of the entries vanish. We also give formula for the Drazin inverse of the sum of two operators under special conditions. |
| Keywords: | Drazin inverse Generalized inverses Bounded operators Banach spaces |
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