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In this paper the existence of unique positive solutions for system of (p, q, r)-Lapalacian Sturm-Liouville type two-point fractional order boundary vaue problems,are positive constants, is established by an application of nxed point theorem of ternary operators on partially ordered metric spaces.

This paper deals with the existence of solutions for the Riemann-Liouville fractional order boundary value problem with infinite-point boundary conditions posed on half-line via the concept of a family of measures of noncompactness in the space of functions C?,?(R+) satisfying the H?lder condition and a generalized Darbo fixed point theorem.