Positive solutions of even higher-order singular superlinear boundary value problems
This paper investigates 2m(th)-order (m > 1) superlinear singular two-point boundary value problems and obtains some necessary and sufficient conditions for existence of C2(m-1) or C2m-1 positive solutions on the closed interval. (C) 2003 Elsevier Science Ltd. All rights reserved.
positive solution boundary value problem 2m(th)-order necessary and sufficient condition