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A Note on Separation Axioms Weaker than T1

Published online by Cambridge University Press:  09 April 2009

S. M. Robinson  and
Y. C. Wu
S. M. Robinson
Affiliation:
Department of Mathematics Cleveland State UniversityCleveland, Ohio
Y. C. Wu
Affiliation:
Case Western Reserve University Cleveland, Ohio
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In [1], Aull and Thron introduce several separation axioms between T0 and T1. In particular, they define a space X to be TD if for each x ∈ X, {x}' is a closed set.

Information

Type
Research Article
Information
Journal of the Australian Mathematical Society , Volume 9 , Issue 1-2 , February 1969 , pp. 233 - 236
Copyright
Copyright © Australian Mathematical Society 1969

References

[1]Aull, C. E. and Thron, W. J., Separation axioms between T0 and Ti, Indag. Math. 23 (1962), 26–37CrossRefGoogle Scholar
[2]Thron, W. J., Topological Structures (Holt, Rinehart, and Winston, New York, 1966).Google Scholar