Victory, Chimeremeze Peter, and Rafiat Bada Abubakar. “Idempotents in Semigroups: Structure, Classification, Extension and Applications”. Faculty of Natural and Applied Sciences Journal of Mathematical and Statistical Computing 2, no. 2 (March 31, 2025): 1–7. Accessed February 9, 2026. https://www.fnasjournals.com/index.php/FNAS-JMSC/article/view/722.