Fixed Point Theory in Semigroups and Applications in Optimization Problems. Lafia Journal of Scientific and Industrial Research, [S. l.], v. 3, n. 2, p. 1–4, 2025. DOI: 10.62050/ljsir2025.v3n2.559. Disponível em: https://lafiascijournals.org.ng/index.php/ljsir/article/view/559. Acesso em: 17 mai. 2026.