Discrete focal boundary-value problems
Agarwal, Ravi P.
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Agarwal, Ravi P. O'Regan, Donal (2000). Discrete focal boundary-value problems. Proceedings of the Edinburgh Mathematical Society 43 , 155-165
In this paper we shall employ the nonlinear alternative of Leray-Schauder and known sign properties of a related Green's function to establish the existence results for the nth-order discrete focal boundary-value problem. Both the singular and non-singular cases will be discussed.