On the approximation of solution regions for nonlinear inequalities. Gulf Journal of Mathematics, [S. l.], v. 21, n. 1, p. 439–456, 2025. DOI: 10.56947/gjom.v21i1.3506. Disponível em: https://gjom.org/index.php/gjom/article/view/3506. Acesso em: 19 aug. 2026.