Advances in Difference Equations
Volume 2009 (2009), Article ID 829735, 21 pages
doi:10.1155/2009/829735

Positive solutions for boundary value problems of second-order functional dynamic equations on time scales

Abstract

Criteria are established for existence of least one or three positive solutions for boundary value problems of second-order functional dynamic equations on time scales. By this purpose, we use a fixed-point index theorem in cones and Leggett-Williams fixed-point theorem.