Aydın, M.2025-11-302025-11-3020252562-286210.12150/jnma.2025.19652-s2.0-105022127851https://doi.org/10.12150/jnma.2025.1965https://hdl.handle.net/20.500.14720/29119This study focuses on examining the controllability of nonlinear fractional differential systems in finite-dimensional spaces, considering multiple delays in both state and control. For linear systems, the necessary and sufficient conditions for relative controllability are established through the definition and application of the Gramian matrix. For nonlinear systems, controllability conditions are derived using Schauder’s fixed point theorem. © 2025, Global Science Press. All rights reserved.eninfo:eu-repo/semantics/closedAccessFractional Differential SystemMittag-Leffler-Type FunctionMultiple Control DelaysMultiple State DelaysMultivariate Matrix EquationsRelative ControllabilityArticle