Applications of the novel diamond alpha Hardy–Copson type dynamic inequalities to half linear difference equations

Abstract

This paper is devoted to novel diamond alpha Hardy–Copson type dynamic inequalities, which are (Formula presented.) complements of the classical ones obtained for (Formula presented.) and their applications to difference equations. We obtain two kinds of diamond alpha Hardy–Copson type inequalities for (Formula presented.), one of which is mixed type and established by the convex linear combinations of the related delta and nabla inequalities while the other one is new and is obtained by using time scale calculus rather than algebra. In contrast to the works existing in the literature, these complements are derived by preserving the directions of the classical inequalities. Therefore both kinds of our results unify some of the known delta and nabla Hardy–Copson type inequalities obtained for (Formula presented.) into one diamond alpha Hardy–Copson type inequalities and offer new types of diamond alpha Hardy–Copson type inequalities which have the same directions as the classical ones and can be considered as complementary inequalities. Moreover the application of these inequalities in the oscillation theory of half linear difference equations provides several nonoscillation criteria for such equations.