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Questions about the properties of vector spaces and linear transformations, including linear systems in general.
4
votes
Sherman-Morrison type formula for Moore-Penrose pseudoinverse
Theorem 15 in the following paper may be useful for you.
Sujit Kumar Mitra and P. Bhimasankaram, Generalized Inverses of Partitioned Matrices and Recalculation of Least Squares Estimates for Data or …