Name Mohammed Said Souid Affliation Department of Economics Sciences, University of Tiaret Degree — Academic Rank - WebSite — Email — Article Presentation Project Book Thesis Speech Innovation TitleJournal 1 On the Caputo-Hadamard fractional IVP with variable order using the upper-lower solutions technique AIMS Mathematics 8 (2022) 5484-5501 2 Fractional variable order differential equations with impulses: A study on the stability and existence properties AIMS Mathematics 8 (2022) 775-791 3 Darbo Fixed Point Criterion on Solutions of a Hadamard Nonlinear Variable Order Problem and Ulam-Hyers-Rassias Stability Journal of Function Spaces 2022 (2022) 1-12 4 On the Fractional Variable Order Thermostat Model: Existence Theory on Cones via Piece-Wise Constant Functions Journal of Function Spaces 2022 (2022) 1-11