Karakostas, George L.Tsamatos, P. Ch.2020-08-112020-08-112002-06-21Karakostas, G. L., & Tsamatos, P. Ch. (2002). Positive solutions and nonlinear eigenvalue problems for retarded second order differential equations. <i>Electronic Journal of Differential Equations, 2002</i>(59), pp. 1-11.1072-6691https://hdl.handle.net/10877/12361We investigate the eigenvalues of a nonlocal boundary value problem for a second order retarded differential equation. We provide information on norm estimates, uniqueness, and continuity of solutions.Text11 pages1 file (.pdf)enAttribution 4.0 InternationalNonlocal boundary value problemsPositive solutionsConcave solutionsRetarded second order differential equationsArticle