NOTE ON THE GENERALIZED INVERSE OF A MATRIX PRODUCT.
Technical summary rept.,
MATHEMATICS RESEARCH CENTER UNIV OF WISCONSIN MADISON
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Let A denote the Moore-Penrose generalized inverse and A the conjugate transpose of a matrix A. Several necessary and sufficient conditions are obtained for AB BA where A is the Moore-Penrose inverse of A, and the structure of matrices A and B satisfying this equation is examined.
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