Ellipticity of Operators Under Shear Transformations. JANOLI International Journal of Mathematical Science, [S. l.], v. 1, n. 1, p. 1–5, 2025. DOI: 10.64758/k0a76y19. Disponível em: https://janolijournals.com/index.php/jijms/article/view/256. Acesso em: 3 mar. 2026.