SANGKHANAN, K.; CHAICHOMPOO, U. Transformation Semigroups Which Are Disjoint Union of Symmetric Groups. Contemporary Mathematics , [S. l.], v. 7, n. 1, 2026. DOI: 10.37256/cm.7120268071. Disponível em: https://ojs.wiserpub.com/index.php/CM/article/view/8071. Acesso em: 9 jan. 2026.