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The focus of this research involves a distinct category of fractional differential equations (FDEs), specifically sequential Liouville-Caputo FDEs, which incorporate antiperiodic boundary conditions and Rie-mann-Liouville integral constraints, provided that certain appropriate conditions are satisfied. The main objective of this paper is to investigate the existence and uniqueness (EU) of the solution for the proposed problem, utilizing fixed point (FP) theory, and several novel equalities have been established in the norm form.
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