On the cardinality of Hausdorff spaces.
Fedeli, A. (1998)
Commentationes Mathematicae Universitatis Carolinae
Similarity:
Displaying similar documents to “On the cardinality of Hausdorff spaces”
On the cardinality of Hausdorff spaces.
Two cardinal inequalities for functionally Hausdorff spaces
Alessandro Fedeli (1994)
Commentationes Mathematicae Universitatis Carolinae
Similarity:
In this paper, two cardinal inequalities for functionally Hausdorff spaces are established. A bound on the cardinality of the -closed hull of a subset of a functionally Hausdorff space is given. Moreover, the following theorem is proved: if is a functionally Hausdorff space, then .
Two set-theoretic problems in topology
Juhász, I.
Similarity:
On the cardinality of n-Urysohn and n-Hausdorff spaces
Maddalena Bonanzinga, Maria Cuzzupé, Bruno Pansera (2014)
Open Mathematics
Similarity:
Two variations of Arhangelskii’s inequality for Hausdorff X [Arhangel’skii A.V., The power of bicompacta with first axiom of countability, Dokl. Akad. Nauk SSSR, 1969, 187, 967–970 (in Russian)] given in [Stavrova D.N., Separation pseudocharacter and the cardinality of topological spaces, Topology Proc., 2000, 25(Summer), 333–343] are extended to the classes with finite Urysohn number or finite Hausdorff number.