Extensions of some differential inequalities for fractional integro-differential equations via upper and lower solutions

Autor: A. Yakar, H. Kutlay
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Қарағанды университетінің хабаршысы. Математика сериясы, Vol 109, Iss 1, Pp 156-167 (2023)
Druh dokumentu: article
ISSN: 2518-7929
2663-5011
DOI: 10.31489/2023M1/156-167
Popis: This paper deals with some differential inequalities for generalized fractional integro-differential equations by using the technique of upper and lower solutions. The fractional differential operator is taken in Caputo’s sense and the nonlinear term divided into two parts depends on the fractional integrals of an unknown function with two different fractional orders. The results are studied by employing a variety of coupled upper and lower solutions. These theorems have some potential for extending the iterative techniques to fractional order integro-differential equations and to coupled systems of integro-differential fractional equations to obtain the existence of solutions as well as approximate solutions for the considered problem.
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