Benchohra, M.Karapınar, ErdalKarapınar, E.Lazreg, J.E.Salim, A.Matematik2024-02-012024-02-012023Benchohra, Mouffak;...et.al. "Fractional Differential Equations with Retardation and Anticipation", Synthesis Lectures on Mathematics and Statistics, pp.77-107, (2023).1938-1743https://doi.org/10.1007/978-3-031-34877-8_4In this chapter, we prove some existence and uniqueness results for a class of boundary and terminal value problems for implicit nonlinear k-generalized ψ -Hilfer fractional differential equations involving both retarded and advanced arguments. Further, examples are given to illustrate the viability of our results in each section. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.eninfo:eu-repo/semantics/closedAccessFractional Differential Equations with Retardation and AnticipationFractional Differential Equations With Retardation and AnticipationBook PartPart F8357710710.1007/978-3-031-34877-8_42-s2.0-85166092520N/AQ4