Jarad, FahdGambo, Yusuf Ya'uBaleanu, DumitruJarad, FahdBaleanu, DumitruAbdeljawad, ThabetAbdeljawad, ThabetMatematik2025-09-232025-09-2320181223-7027https://hdl.handle.net/20.500.12416/15634Jarad, Fahd/0000-0002-3303-0623; Gambo, Yusuf Ya'U/0000-0002-3954-3200The authors in [1] recently introduced a new generalized fractional derivative on AC(y)(n)[a ,b] and C-y(n)[a, b], and defined their Caputo version. This derivative contains two parameters and reduces to the classical Caputo derivatives if one of these parameters tend to certain values. From here and after, by generalized Caputo fractional derivative, we refer to the Caputo version of the generalized fractional derivative. This paper studies the generalized Caputo fractional derivative and establishes the Fundamental Theorem of Fractional Calculus (FTFC) in the sense of this derivative. The fundamental results are used in establishing some vital theorems and then applied to vector calculus.eninfo:eu-repo/semantics/closedAccessGeneralized Caputo Fractional DerivativeFundamental Theorem Of Fractional Calculus (Ftfc)Fractional Vector CalculusFractional Green'S TheoremFractional Gauss' TheoremArticle2-s2.0-85059227833