On Countably $\alpha$-Compact Topological Spaces
Abstract
In this paper, some features of countably -compact topological spaces are presented and proven. The connection between countably % -compact, Tychonoff, and -Hausdorff spaces is explained. The space is countably -compact space iff every locally finite family of non-empty subsets of such space is finite is demonstrated. The countably -compact space with weight greater than or equal to is the -continuous image of a closed subspace of the cube is discussed. The boundedness of -continuous functions mapping % -compact spaces to other spaces is cleared. Moreover, the % -continuous function mapping the space to the countably -compact space is an -closed subset of is argued and proved. We explained that the -continuous functions mapping any topological space to a countably -compact space can be extended over its domain under some constraints. We claimed that the property of being % -compact is countably -compact but the converse is not and the countable union of countably -compact subspaces of is also countably -compact.
Cite
@article{arxiv.2205.11674,
title = {On Countably $\alpha$-Compact Topological Spaces},
author = {Eman Almuhur and Muhammad Ahsan Khan},
journal= {arXiv preprint arXiv:2205.11674},
year = {2022}
}