Positive Solutions for a System of Coupled Semipositone Fractional Boundary Value Problems with Sequential Fractional Derivatives

Johnny Henderson, Rodica Luca and Alexandru Tudorache
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Johnny Henderson: Department of Mathematics, Baylor University, Waco, TX 76798-7328, USA
Rodica Luca: Department of Mathematics, Gh. Asachi Technical University, 11 Blvd. Carol I, 700506 Iasi, Romania
Alexandru Tudorache: Department of Computer Science and Engineering, Gh. Asachi Technical University, 700050 Iasi, Romania

Mathematics, 2021, vol. 9, issue 7, 1-22

Abstract: We study the existence and multiplicity of positive solutions for a system of Riemann–Liouville fractional differential equations with sequential derivatives, positive parameters and sign-changing singular nonlinearities, subject to nonlocal coupled boundary conditions which contain Riemann–Stieltjes integrals and various fractional derivatives. In the proof of our main existence results we use the nonlinear alternative of Leray–Schauder type and the Guo–Krasnosel’skii fixed point theorem.

Keywords: Riemann–Liouville fractional differential equations; nonlocal boundary conditions; sign-changing functions; singular functions; existence; multiplicity (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
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