Rank-Preserving Encryption for Cotangent Similarity using Complex Neutrosophic Sets. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 19, n. 3, p. 7378, 2026. DOI: 10.29020/nybg.ejpam.v19i3.7378. Disponível em: https://www.ejpam.com/ejpam/article/view/7378. Acesso em: 19 sep. 2026.