Divya, ASasikala, D2023-11-252023-11-2520201857-8438https://doi.org/10.37418/amsj.9.4.13The focus of this paper is to introduce CI-Lower and CI-Upper approximation in cordial incidence topological space. Some effective characterizations and properties are studied. Furthermore, results are proved with some counter examples and are discussed using graphs.en-USArticle