An extension of the perturbation analysis for the Drazin inverse.
Continuity and general perturbation of the Drazin inverse for closed linear operators.
Integral representation of the Drazin inverse.
Integral representations of the -Drazin inverse in -algebras
The paper gives new integral representations of the -Drazin inverse of an element of a -algebra that require no restriction on the spectrum of . The representations involve powers of and of its adjoint.
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