On the Critical Conditions for Thermal Explosion in Slab Geometries: A Frank-Kamenetskii Approach and Chebyshev Approximation. International Journal of Development Mathematics (IJDM), [S. l.], v. 3, n. 3, p. 001–013, 2026. DOI: 10.62054/ijdm/0303.01. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/330.. Acesso em: 9 sep. 2026.