On Topological Spaces With Dense Completely Metrizable Subspaces
T. Nagamizu (1993)
Publications de l'Institut Mathématique
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Displaying similar documents to “On a Dense Gd-diagonal”
On Topological Spaces With Dense Completely Metrizable Subspaces
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Angelo Bella, Viacheslav I. Malykhin (1998)
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We prove resolvability and maximal resolvability of topological spaces having countable tightness with some additional properties. For this purpose, we introduce some new versions of countable tightness. We also construct a couple of examples of irresolvable spaces.
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Monotone weak Lindelöfness
Maddalena Bonanzinga, Filippo Cammaroto, Bruno Pansera (2011)
Open Mathematics
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The definition of monotone weak Lindelöfness is similar to monotone versions of other covering properties: X is monotonically weakly Lindelöf if there is an operator r that assigns to every open cover U a family of open sets r(U) so that (1) ∪r(U) is dense in X, (2) r(U) refines U, and (3) r(U) refines r(V) whenever U refines V. Some examples and counterexamples of monotonically weakly Lindelöf spaces are given and some basic properties such as the behavior with respect to products and...