Products of convergence properties
János Gerlits, Zsigmond Nagy (1982)
Commentationes Mathematicae Universitatis Carolinae
Similarity:
János Gerlits, Zsigmond Nagy (1982)
Commentationes Mathematicae Universitatis Carolinae
Similarity:
Aleksander V. Arhangel'skii (2010)
Commentationes Mathematicae Universitatis Carolinae
Similarity:
Some strong versions of the Fréchet-Urysohn property are introduced and studied. We also strengthen the concept of countable tightness and generalize the notions of first-countability and countable base. A construction of a topological space is described which results, in particular, in a Tychonoff countable Fréchet-Urysohn space which is not first-countable at any point. It is shown that this space can be represented as the image of a countable metrizable space under a continuous pseudoopen...
J. Chaber (1976)
Fundamenta Mathematicae
Similarity: