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Closedness of ranges of upper-triangular operators |
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| Authors: | Yan-Ni Dou Chun-Fang Shao |
| Institution: | a College of Mathematics and Information Science, Shaanxi Normal University, Xi'an 710062, People's Republic of China b Department of Mathematics, Ankang University, Ankang 725000, People's Republic of China |
| Abstract: | In this paper, the closedness of ranges and Kato non-singularity of upper triangular operator matrices are investigated. |
| Keywords: | Range Kato non-singular Operator matrix Upper-triangular operator |
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