Every metric space of weight $\lambda=\lambda^{\aleph_0}$ admits a condensation onto a Banach space
Abstract
In this paper, we have proved that for each cardinal number such that a metric space of weight admits a bijective continuous mapping onto a Banach space of weight . Then, we get that every metric space of weight continuum admits a bijective continuous mapping onto the Hilbert cube. This resolves the famous Banach's Problem (when does a metric (possibly Banach) space admit a bijective continuous mapping onto a compact metric space?) in the class of metric spaces of weight continuum. Also we get that every metric space of weight admits a bijective continuous mapping onto a Hausdorff compact space. This resolves the Alexandroff Problem (when does a Hausdorff space admit a bijective continuous mapping onto a Hausdorff compact space?) in the class of metric spaces of weight .
Cite
@article{arxiv.2202.04576,
title = {Every metric space of weight $\lambda=\lambda^{\aleph_0}$ admits a condensation onto a Banach space},
author = {Alexander V. Osipov and Evgenii G. Pytkeev},
journal= {arXiv preprint arXiv:2202.04576},
year = {2022}
}
Comments
8 pages