Acute perturbation of Drazin inverse and oblique projectors
Sanzheng QIAO , Yimin WEI
Front. Math. China ›› 2018, Vol. 13 ›› Issue (6) : 1427 -1445.
Acute perturbation of Drazin inverse and oblique projectors
For an n×n complex matrix A with ind(A) = r; let AD and = I-AAD be respectively the Drazin inverse and the eigenprojection corresponding to the eigenvalue 0 of A: For an n×n complex singular matrix B with ind(B) =s; it is said to be a stable perturbation of A; if is nonsingular, equivalently, if the matrix B satisfies the condition R(Bs) and , introduced by Castro-Gonz
Drazin inverse / acute perturbation / stable perturbation / spectral radius / spectral norm / oblique projection
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Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature
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