共 18 条
- [1] Al-Omari A., 2013, Novi Sad J. Math., V43, P139
- [2] Alexandroff P., 1937, REC MATH MOSCOU, V2, P501
- [3] Caldas M, 2010, AN STIINT U AL I-MAT, V56, P163
- [4] Caldas M., 2004, Divu. Math, V12, P161
- [5] On the cardinality of the θ-closed hull of sets [J]. TOPOLOGY AND ITS APPLICATIONS, 2013, 160 (18) : 2371 - 2378
- [6] THETA-CLOSED SUBSETS OF HAUSDORFF SPACES [J]. PACIFIC JOURNAL OF MATHEMATICS, 1975, 59 (02) : 407 - 415
- [7] Engelking R., 1989, General topology
- [9] Freud G., 1958, Acta Math. Hung, V9, P333, DOI [10.1007/BF02020262, DOI 10.1007/BF02020262]
- [10] Jafari S, 2011, EUR J PURE APPL MATH, V4, P147