Nonlinear operators and differential equations in Banach spaces
Nonlinear operators and differential equations in Banach spaces
Nonlinear Analysis: Theory, Methods & Applications
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In this paper, we investigate the existence of mild solutions of second-order initial-values problems for a class of semilinear differential inclusions with nonlocal conditions. By using suitable fixed-point theorems for multi-valued maps, we study the case where the multi-valued map F has convex or nonconvex values.