Aqeel, Radhwan Mohammed, and Samah Mohammed Al-qadhi. “Other Notions of ∧-Sets and ∨-Sets In Topological Spaces”. Journal of the Faculties of Education - University of Aden 17, no. 1 (December 31, 2023): –. Accessed February 7, 2025. https://jef.adenuniv.net/index.php/jef/article/view/17.