ON THE COMBINATORIAL PROPERTIES OF NILPOTENT AND IDEMPOTENT CONJUGACY CLASSES OF THE INJECTIVE ORDER-DECREASING TRANSFORMATION SEMIGROUP. FULafia Journal of Science and Technology , [S. l.], v. 1, n. 1, p. 91–94, 2021. Disponível em: https://lafiascijournals.org.ng/index.php/fjst/article/view/15. Acesso em: 15 jul. 2026.