Aiping Huang, William Zhu. Topological Characterizations for Three Covering Approximation Operators. In Davide Ciucci, Masahiro Inuiguchi, Yiyu Yao, Dominik Slezak, Guoyin Wang, editors, Rough Sets, Fuzzy Sets, Data Mining, and Granular Computing - 14th International Conference, RSFDGrC 2013, Halifax, NS, Canada, October 11-14, 2013. Proceedings. Volume 8170 of Lecture Notes in Computer Science, pages 277-284, Springer, 2013. [doi]
Abstract is missing.