A Natural Extension of the Banach Fixed Point Theorem in a b-Metric Space with an Orthogonal Direct Sum Structure. Eur. J. Pure Appl. Math. [Internet]. 2025 Aug. 4 [cited 2025 Dec. 5];18(3):6583. Available from: https://www.ejpam.com/index.php/ejpam/article/view/6583