Semnan University International Journal of Nonlinear Analysis and Applications 2008-6822 7 2 2016 12 20 On boundary value problems of higher order abstract fractional integro-differential equations 165 184 520 10.22075/ijnaa.2017.520 EN Sabri T. M. Thabet Department of Mathematics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad - 431004, Maharashtra, India. Machindra B. Dhakne Department of Mathematics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad - 431004, Maharashtra, India. Journal Article 2015 08 25 The aim of this paper is to establish the existence of solutions of boundary value problems of nonlinear fractional integro-differential equations involving Caputo fractional derivative by using the techniques such as fractional calculus, H\"{o}lder inequality, Krasnoselskii's fixed point theorem and nonlinear alternative of Leray-Schauder type. Examples are exhibited to illustrate the main results. Fractional integro-differential equations boundary value problem fixed point theorems https://ijnaa.semnan.ac.ir/article_520_194aeb0c75105fe3eb3c003fb975b20e.pdf