Multiple Positive Solutions for a Class of Boundary Value Problem of Fractional p , q -Difference Equations under p , q -Integral Boundary Conditions

Abstract

This paper is mainly concerned with a class of fractional $\left(p,q\right)$ -difference equations under $\left(p,q\right)$ -integral boundary conditions. Multiple positive solutions are established by using the topological degree theory and Krein–Rutman theorem. Finally, two examples are worked out to illustrate the main results.