A space X is said to be monotonically star countably compact if one assign to for each open cover U a subspace s(U) subset of X, called a kernel, such that s(U) is a countably compact subset of X and St(s(U); U) = X, and if V refines U then s(U) subset of s(V), where St(s(U); U) = boolean OR{U is an element of U : U boolean AND s(U) not equal (empty set}. In this paper, we investigate the relationships between monotonically star countably compact spaces and other related spaces, and also study the topological properties of monotonically star countably compact spaces.
机构:
Nanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing, Jiangsu, Peoples R ChinaNanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing, Jiangsu, Peoples R China
机构:
Nanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing 210046, Jiangsu, Peoples R ChinaNanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing 210046, Jiangsu, Peoples R China
Song, Yan-Kui
Xuan, Wei-Feng
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Nanjing Audit Univ, Sch Stat & Math, Nanjing 211815, Jiangsu, Peoples R ChinaNanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing 210046, Jiangsu, Peoples R China
机构:
Nanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing 210046, Jiangsu, Peoples R ChinaNanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing 210046, Jiangsu, Peoples R China
Song, Yankui
Zhao, Hongying
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Nanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing 210046, Jiangsu, Peoples R ChinaNanjing Normal Univ, Sch Math Sci, Inst Math, Nanjing 210046, Jiangsu, Peoples R China