Investigating Lie Group Symmetry and Analyzing Stability in Mathe-matical Modeling of the HIV Epidemic. Contemporary Mathematics , [S. l.], v. 6, n. 6, p. 8649–8666, 2025. DOI: 10.37256/cm.6620257223. Disponível em: https://ojs353.mebyme.cn/index.php/CM/article/view/7223. Acesso em: 24 dec. 2025.