University of Tabriz Computational Methods for Differential Equations 2345-3982 1 1 2013 12 20 Existence and multiplicity of positive solutions for a coupled system of perturbed nonlinear fractional differential equations 39 54 260 EN Kazem Ghanbari Sahand University of Technology Yousef Gholami Sahand University of Technology Journal Article 2013 12 14 In this paper, we consider a coupled system of nonlinear fractional differential equations (FDEs), such that both equations have a particular perturbed terms. Using emph{Leray-Schauder} fixed point theorem, we investigate the existence and multiplicity of positive solutions for this system. https://cmde.tabrizu.ac.ir/article_260_01737ac7f4a2458cfc9c83932cc6ebdb.pdf