Generalization of the Sherman-Morrison-Woodbury formula involving the Schur complement

19 Apr 2017 Xu Xuefeng

Let $X\in\mathbb{C}^{m\times m}$ and $Y\in\mathbb{C}^{n\times n}$ be nonsingular matrices, and let $N\in\mathbb{C}^{m\times n}$. Explicit expressions for the Moore-Penrose inverses of $M=XNY$ and a two-by-two block matrix, under appropriate conditions, have been established by Castro-Gonz\'{a}lez et al. [Linear Algebra Appl... (read more)

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