Applied Mathematics and Computation
Solvability of multi-point boundary value problem at resonance (III)
Applied Mathematics and Computation
Upper and lower solutions for periodic problems
Applied Mathematics and Computation
Solvability of multi-point boundary value problem at resonance-part IV
Applied Mathematics and Computation
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In this paper, we prove existence results for periodic boundary value problems concerning the n^t^h -order differential equationx^(^n^)(t)=f(t,x(t),x^'(t),...,x^(^n^-^1^)(t)),t@?[0,1]. Our method is based upon the coincidence degree theory of Mawhin. The results obtained are new. Examples are given to illustrate the main results.