Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8904123 | Topology and its Applications | 2018 | 16 Pages |
Abstract
We list some conditions imposed on real-valued functions and show that a large number of spaces, such as first countable spaces, γ-spaces, Nagata-spaces, semi-metrizable spaces, quasi-metrizable spaces as well as metrizable spaces can be characterized with real-valued functions satisfying one or more of these conditions.
Keywords
Related Topics
Physical Sciences and Engineering
Mathematics
Geometry and Topology
Authors
Er-Guang Yang,