International Journal of Neutrosophic Science IJNS 2690-6805 2692-6148 10.54216/IJNS https://www.americaspg.com/journals/show/1427 2020 2020 New Operators Using Neutrosophic Crisp Open Set Department of Mathematics, College of Science, AlFurat University, Deir-ez-Zor, Syria Riad K. Al Al-Hamido In this paper, we introduce new sets  in neutrosophic crisp topology called neutrosophic crisp frontier, neutrosophic crisp border and neutrosophic crisp exterior with the help of neutrosophic crisp open sets in neutrosophic crisp topological space. Also, we discuss the basic and important properties of them and the relations between them. Finally, many examples are presented.  2023 2023 17 26 10.54216/IJNS.200102 https://www.americaspg.com/articleinfo/21/show/1427