Abstract.In this paper, we derive a representation for the Drazin inverse of a block matrix M=( A B C D ) under the assumptions 𝐴𝐴𝜋𝐵 = 0, 𝐶𝐴𝜋𝐵 ...
Restoring Definiteness via Shrinking, with an Application to Correlation Matrices with a Fixed Block
This is a preview. Log in through your library . Abstract Indefinite approximations of positive semidefinite matrices arise in various data analysis applications involving covariance matrices and ...
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