Matrix Decomposition of the $r$-Whitney Numbers. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 19, n. 2, p. 7009, 2026. DOI: 10.29020/nybg.ejpam.v19i2.7009. Disponível em: https://www.ejpam.com/ejpam/article/view/7009. Acesso em: 28 jul. 2026.