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The perturbation of the Drazin inverse |
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| Abstract: | In this paper, we present the explicit expressions of the perturbation of the Drazin inverse under different conditions. Also, we give the upper bounds of ‖(A+E)D?A D‖ P /‖A D‖ P for these cases. |
| Keywords: | Drazin inverse block matrix perturbation P-norm numerical analysis |