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On the approximation-solvability of equations involving $A$-proper and pseudo-$A$-proper mappings


Author: W. V. Petryshyn
Journal: Bull. Amer. Math. Soc. 81 (1975), 223-312
MSC (1970): Primary 47A15, 47H10; Secondary 39A40
DOI: https://doi.org/10.1090/S0002-9904-1975-13728-1
MathSciNet review: 0388173
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DOI: https://doi.org/10.1090/S0002-9904-1975-13728-1

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