@article{Erkan2026, 
author = {Furkan Erkan and Nuket Aykut Hamal and Sotiris K. Ntouyas and Bashir Ahmad},
title = {Coupled system of    (  k  ,  ψ  )-Caputo fractional boundary value problems involving multi-point fractional closed boundary conditions},
year = {2026},
journal = {AIMS Mathematics},
volume = {11},
number = {1},
pages = {2722-2746},
keywords = {coupled systems, (k, ψ)-Caputo fractional derivative, existence and uniqueness, fixed point theory, Leray–Schauder alternative},
url = {https://www.sciopen.com/article/10.3934/math.2026110},
doi = {10.3934/math.2026110},
abstract = {This work is devoted to the analysis of a coupled system of    (  k  ,  ψ  )-Caputo fractional differential equations equipped with fractional closed boundary conditions. We establish the uniqueness of solutions by applying Banach's contraction principle, and existence is obtained through the Leray–Schauder alternative. Illustrative examples are included to demonstrate the effectiveness and practical relevance of the theoretical results.}
}