Measures and slaloms
Abstract
We examine measure-theoretic properties of spaces constructed using certain technique of Todor\v{c}evi\'{c}. We show that the existence of strictly positive measures on such spaces depends on combinatorial properties of certain families of slaloms. As a corollary we get that if then there is a non-separable space which supports a measure and which cannot be mapped continuously onto . Also, without any additional axioms we prove that there is a non-separable growth of supporting a measure and that there is a compactification of with growth of such properties and such that the natural copy of is complemented in . Finally, we discuss examples of spaces not supporting measures but satisfying quite strong chain conditions. Our main tool is a characterization due to Kamburelis of Boolean algebras supporting measures in terms of their chain conditions in generic extensions by a measure algebra.
Cite
@article{arxiv.1604.03137,
title = {Measures and slaloms},
author = {Piotr Borodulin-Nadzieja and Tanmay Inamdar},
journal= {arXiv preprint arXiv:1604.03137},
year = {2016}
}
Comments
25 pages