DISCRETIZATION OF LAPLACIAN OPERATOR IN POLAR COORDINATE SYSTEM, USING CRANK-NICOLSON’S (CN) SCHEME AND STABILITY ANALYSIS. Kashf Journal of Multidisciplinary Research, [S. l.], v. 3, n. 02, p. 163–176, 2026. DOI: 10.71146/kjmr844. Disponível em: https://kjmr.com.pk/kjmr/article/view/844. Acesso em: 21 may. 2026.