On sequence-covering $\pi$-$s$-images of locally separable metric spaces

Nguyen Van Dung

On sequence-covering $π$ - $s$ -images of locally separable metric spaces

Authors

Nguyen Van Dung Department of Mathematics, Pedagogical University of Dong thap, Viet nam Author

Keywords:

Sequence-covering, double

c s

-cover, point-star network,

π

-property,

π

-mapping,

s

-mapping

Subjects:

54D65, 54E35, 54E40

Abstract

We introduce the notion of double $c s$ -cover and give acharacterization on sequence-covering $π$ - $s$ -images of locallyseparable metric spaces by means of double $c s$ -covers having $π$ -property of $ℵ_{0}$ -spaces.

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Published

2009-04-15

Issue

Vol. 61 No. 2 (2009): Vol. 61, Issue 2

Section

Articles

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

On sequence-covering π-s-images of locally separable metric spaces