Perturbation Analysis for the Operator EquationTx = bin Banach Spaces☆
Perturbation Analysis for the Operator EquationTx = bin Banach Spaces☆
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DOI:
10.1006/jmaa.1997.5482
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发表时间:
1997-08
影响因子:
1.3
通讯作者:
Guoliang Chen;Yifeng Xue
中科院分区:
文献类型:
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作者:
Guoliang Chen;Yifeng Xue
LetX1, X2be two Banach spaces over the complex fieldCand letT:X1 → X2be a bounded linear operator with the generalized inverseT+. LetT=T+δTbe a bounded linear operator with ‖T+‖ ‖δT‖ < 1. Suppose thatdimkerT=dimkerT<∞orR(T)∩KerT+=0. ThenThas the generalized inverseT=(I+T+δT)−1T+with‖T+‖≤‖T+‖1−‖T+‖‖δT‖.This result generalizes Theorem 3.9 ofNa. Using this result, we give some results of the perturbation analysis for the operator equationTx = b.