Let E be a finite-dimensional Banach space, let C 0 .R; E/ be a Banach space of functions continuous and bounded on R and taking values in E; let KW C 0 .R; E/ ! C 0 .R; E/ be a c-continuous bounded mapping, let AW E ! E be a linear continuous mapping, and let h 2 C 0 .R; E/: We establish conditions for the existence of bounded solutions of the nonlinear equation
Main Functional Spaces and c-Continuous OperatorsLet R be the set of all real numbers, let C be the set of all complex numbers, let E be a real or complex Banach space with norm k k E ; and let L.E; E/ be the Banach algebra of all linear continuous operators AW E ! E with the normBy C 0 .R; E/ we denote the Banach space of functions x D x.t/ continuous and bounded on R and taking values in E with the normNote that kak E D jaj if E D R or E D C: Let C 1 .R; E/ denote the Banach space of functions x 2 C 0 .R; E/ each derivative of which is an element of the space C 0 .R; E/ with the normWe say that a sequence .x n / n 1 of elements of the space C 0 .R; E/ converges locally to an element x 2 C 0 .R; E/ and write x n loc: C 0 .R;E / ! x as n ! 1 if this sequence is bounded and, for every number p > 0; one has National University of Water Management and Nature Resources Use, Rivne, Ukraine.