English

A subbase property for describing edge-end spaces

General Topology 2025-08-26 v1 Combinatorics

Abstract

In a previous joint work with Aurichi and Magalh\~aes Jr., we showed that the topological spaces arising from the edge-end structure of infinite graphs define a proper subfamily of those obtained through the well-known (vertex-)ends. This result was later recovered by a more general approach due to Pitz, who also stated the problem of finding a purely topological characterization for the class of edge-end spaces. His question reads as an edge-related version of a similar conjecture posed by Diestel in 1992, but there regarding the usual end structure of infinite graphs and which was recently answered also by Pitz via the existence of a suitable clopen subbase. This paper shows how an extra intersection property can be combined with his solution in order to restrict it to the edge-end spaces, hence stating a topological description for this later family as well.

Keywords

Cite

@article{arxiv.2508.17424,
  title  = {A subbase property for describing edge-end spaces},
  author = {Lucas Real},
  journal= {arXiv preprint arXiv:2508.17424},
  year   = {2025}
}

Comments

13 pages

R2 v1 2026-07-01T05:03:35.308Z