2016
DOI: 10.1007/s00010-016-0413-3
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Weighted binary relations for operators on Banach spaces

Abstract: Using the Wg-Drazin inverses, we introduce and characterize new weighted preorders on the set of all bounded linear operators between two Banach spaces. As an application, we present two generalized Drazin pre-orders and an extension of the generalized Drazin order to a partial order.Mathematics Subject Classification. 47A05, 47A99, 15A09.

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Cited by 10 publications
(5 citation statements)
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“…Proposition 14. Consider the ordered systems (M, B) and (M + BF, B) with M as in (8) satisfying the condition given in (15).…”
Section: Discussionmentioning
confidence: 99%
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“…Proposition 14. Consider the ordered systems (M, B) and (M + BF, B) with M as in (8) satisfying the condition given in (15).…”
Section: Discussionmentioning
confidence: 99%
“…In particular, the minus partial order plays an important role in solving problems that involve shorted operators or modified matrices by adding/deleting a row or a column [8,14]. Some results on theoretical, applied, and numerical aspects of generalized inverses and partial orders can be found in [6,7,9,15,16,17,19,20,21].…”
Section: Introductionmentioning
confidence: 99%
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“…For a most extensive study on generalized inverses, matrix partial orders, and pre-orders the authors refer the reader to [1,2,3,6,7,10,12,13,14,18,19,20,21,22,24,26].…”
Section: Definition 14mentioning
confidence: 99%
“…However, to our acknowledge, the minus partial order for nilpotent matrices has not been investigated and it will be partially considered in this paper. In [8,9] similar relations to Drazin preorder were studied for rectangular matrices, and then extended to operators on Banach spaces in [4,11].…”
Section: Introductionmentioning
confidence: 99%