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Generalized inverses, normal solvability, and iteration for singular operator equations. (English) Zbl 0236.41015
Nonlinear functional Analysis Appl., Proc. adv. Sem. Math. Res. Center, Univ. Wisconsin 1970, Publ. 26 Math. Res. Center Univ. Wisconsin 311-359 (1971).

MSC:
41A35 Approximation by operators (in particular, by integral operators)
47A50 Equations and inequalities involving linear operators, with vector unknowns
41A65 Abstract approximation theory (approximation in normed linear spaces and other abstract spaces)