Quasi-posinormal operators
Keyword(s):
In this paper, we introduce a class of operators on a Hilbert space namely quasi-posinormal operators that contain properly the classes of normal operator, hyponormal operators, M–hyponormal operators, dominant operators and posinormal operators . We study some basic properties of these operators .Also we are looking at the relationship between invertibility operator and quasi-posinormal operator .
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1965 ◽
Vol 17
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pp. 1030-1040
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1981 ◽
Vol 22
(1)
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pp. 69-72
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Keyword(s):
1999 ◽
Vol 22
(1)
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pp. 97-108
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1969 ◽
Vol 21
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pp. 1421-1426
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1972 ◽
Vol 13
(3)
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pp. 323-326
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