On a $(\omega ,c)-$periodic solution for an impulsive system of second-order differential equation with product of two nonlinear functions and mixed maxima: On a $(\omega ,c)-$periodic solution for an impulsive system of second-order differential equation. Uzbekistan Journal of Mathematics and Computer Science , [S. l.], v. 1, n. 1, p. 20–32, 2025. DOI: 10.56143/ujmcs.v1i1.7. Disponível em: https://ujmcs.tstu.uz/index.php/ujmcs/article/view/6. Acesso em: 6 dec. 2025.