Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-25T06:05:54.465Z Has data issue: false hasContentIssue false

On Almost Continuous Mappings and Baire Spaces

Published online by Cambridge University Press:  20 November 2018

Shwu-Yeng T. Lin
Affiliation:
Department of Mathematics, University of South Florida, Tampa, Florida 33620, USA
You-Feng Lin
Affiliation:
Department of Mathematics, University of South Florida, Tampa, Florida 33620, USA
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

It is proved, in particular, that a topological space X is a Baire space if and only if every real valued function f: X →R is almost continuous on a dense subset of X. In fact, in the above characterization of a Baire space, the range space R of real numbers may be generalized to any second countable, Hausdorfï space that contains infinitely many points.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1978

References

1. Hocking, J. G. and Young, Gail S., Topology, (Addison-Wesley, Reading, Mass., 1961).Google Scholar
2. Husain, T., Almost continuous mapping, Prace Mathematyczne 10 (1966), 1-7.Google Scholar
3. Husain, T., Introduction to topological groups, (W. B. Saunders Company, Philadelphia and London, 1966).Google Scholar
4. Kelley, J. L., General topology, (Van Nostrand, Princeton, N.J., 1955).Google Scholar
5. Lin, S.-Y. T., Almost continuity of mappings, Canad. Math. Bull. 11 (1968), 453-455.Google Scholar
6. Long, P. E. An introduction to general topology, (Charles E. Merrill Publishing Company, Columbus, Ohio, 1971).Google Scholar
7. Long, P. E., and Carnahan, D. A., Comparing almost continuous functions, Proc. Amer. Math. Soc. 38 (1973), 413-418.Google Scholar
8. Long, P. E. and McGehee, E. E. Jr, Properties of almost continuous functions, Proc. Amer. Math. Soc. 28 (1970), 175-180.Google Scholar
9. Noiri, T., On weakly continuous mappings, Proc. Amer. Math. Soc. 46 (1974), 120-124.Google Scholar
10. Singal, M. K., and Singal, A. R., Almost-continuous mappings, Yokohama Math. J. 16 (1968), 63-73.Google Scholar