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Nonlinear operator equations and boundary-value problems. (English) Zbl 0289.47033

MSC:

47J05 Equations involving nonlinear operators (general)
35J60 Nonlinear elliptic equations
46B10 Duality and reflexivity in normed linear and Banach spaces
47F05 General theory of partial differential operators
46E35 Sobolev spaces and other spaces of “smooth” functions, embedding theorems, trace theorems