Shi, A. and Zhang, S. (2009) Upper and Lower Solutions Method and a Fractional Differential Equation Boundary Value Problem. Electronic Journal of Qualitative Theory of Differential Equations, 30, 1-13.
https://doi.org/10.14232/ejqtde.2009.1.30

has been cited by the following article:

• TITLE: Existence Results for Systems of Nonlinear Caputo Fractional Differential Equations

  AUTHORS: Faten Toumi

  KEYWORDS: Mixed Quasi-Monotone Property, Coupled Lower and Upper Solutions, Mon-otone Method, Nonlinear Fractional Differential System

  JOURNAL NAME: Applied Mathematics, Vol.14 No.3, March 22, 2023

  ABSTRACT: We aim, in this work, to demonstrate the existence of minimal and maximal coupled quasi-solutions for nonlinear Caputo fractional differential systems with order q ∈ (1,2). Our approach is based on mixed monotone iterative techniques developed under the concept of lower and upper quasi-solutions. Our results extend those obtained for ordinary differential equations and fractional ones.