| Best Approximation and ω-Approximation of Operator by Positive Operators |
| Received:July 31, 1989 |
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| Abstract: |
| In this paper, We determine constraction of set Pδ(A) and we characterize normal operators with a unique w-positive approximation. |
| Citation: |
| DOI:10.3770/j.issn:1000-341X.1991.02.007 |
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