Some Properties of D-Operator on Hilbert Space
Keyword(s):
New Type
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In this paper, we introduce a new type of Drazin invertible operator on Hilbert spaces, which is called D-operator. Then, some properties of the class of D-operators are studied. We prove that the D-operator preserves the scalar product, the unitary equivalent property, the product and sum of two D-operators are not D-operator in general but the direct product and tenser product is also D-operator.
2006 ◽
Vol 13
(03)
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pp. 239-253
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Keyword(s):
2001 ◽
Vol 16
(02)
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pp. 91-98
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Keyword(s):
2005 ◽
Vol 71
(1)
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pp. 107-111
Keyword(s):
Keyword(s):
2008 ◽
Vol 60
(5)
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pp. 1001-1009
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