$G_{\delta}$ sets in $\sigma$-ideals generated by compact sets
Logic
2019-02-26 v2
Abstract
Given a compact Polish space and the hyperspace of its compact subsets , we consider the class of -ideals of compact subsets of that can be represented via a compact subset of . If we extend such an ideal by considering (or analytic) sets that are covered by countable unions of sets in , we show that the extended collection can still be represented via some compact subset of .
Keywords
Cite
@article{arxiv.1807.00845,
title = {$G_{\delta}$ sets in $\sigma$-ideals generated by compact sets},
author = {Maya Saran},
journal= {arXiv preprint arXiv:1807.00845},
year = {2019}
}
Comments
New version (Feb 23, 2019) has corrected typos and minor changes to arguments. Results unchanged