Investigating Length and Mean-Fuzzy Subalgebras in Sheffer Stroke Hilbert Algebras. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 18, n. 2, p. 5914, 2025. DOI: 10.29020/nybg.ejpam.v18i2.5914. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/5914. Acesso em: 5 dec. 2025.