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Archived Comments for: Inequalities for ranks of matrix expressions involving generalized inverses

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  1. An invalid derivation in the paper "Inequalities for ranks of matrix expressions involving generalized inverses"

    Yongge Tian, Central University of Finance and Economics

    19 November 2014

    The author abused rank formulas in the derivation of (14), and results following it are totally unacceptable. Correct formulas can be established by a different approach.

    Competing interests

    None declared

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