Compactification of cut-point spaces
General Topology
2019-09-25 v1
Abstract
We show that if is a separable locally compact Hausdorff connected space with fewer than non-cut points, then embeds into a dendrite , and the set of non-cut points of is a nowhere dense -set. We then prove a Tychonoff cut-point space is weakly orderable if and only if is an irreducible continuum. Finally, we show every separable metrizable cut-point space densely embeds into a reducible continuum with no cut points. By contrast, there is a Tychonoff cut-point space each of whose compactifications has the same cut point. The example raises some questions about persistent cut points in Tychonoff spaces.
Cite
@article{arxiv.1909.10646,
title = {Compactification of cut-point spaces},
author = {David S. Lipham},
journal= {arXiv preprint arXiv:1909.10646},
year = {2019}
}
Comments
8 pages