In this paper, two cardinal inequalities for functionally Hausdorff spaces are established. A bound on the cardinality of the $\tau \theta $-closed hull of a subset of a functionally Hausdorff space is given. Moreover, the following theorem is proved: if $X$ is a functionally Hausdorff space, then $|X|\leq 2^{\chi (X)\text{\it wcd}(X)}$.
@article{118676, author = {Alessandro Fedeli}, title = {Two cardinal inequalities for functionally Hausdorff spaces}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {35}, year = {1994}, pages = {365-369}, zbl = {0807.54006}, mrnumber = {1286584}, language = {en}, url = {http://dml.mathdoc.fr/item/118676} }
Fedeli, Alessandro. Two cardinal inequalities for functionally Hausdorff spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 35 (1994) pp. 365-369. http://gdmltest.u-ga.fr/item/118676/
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