Krasinkiewicz spaces and parametric Krasinkiewicz maps
Abstract
We say that a metrizable space is a Krasinkiewicz space if any map from a metrizable compactum into can be approximated by Krasinkiewicz maps (a map is Krasinkiewicz provided every continuum in is either contained in a fiber of or contains a component of a fiber of ). In this paper we establish the following property of Krasinkiewicz spaces: Let be a perfect map between metrizable spaces and a Krasinkiewicz complete -space. If is a countable union of closed finite-dimensional subsets, then the function space with the source limitation topology contains a dense -subset of maps such that all restrictions , , are Krasinkiewicz maps. The same conclusion remains true if is homeomorphic to a closed convex subset of a Banach space and is a -space.
Cite
@article{arxiv.0802.4436,
title = {Krasinkiewicz spaces and parametric Krasinkiewicz maps},
author = {Eiichi Matsuhashi and Vesko Valov},
journal= {arXiv preprint arXiv:0802.4436},
year = {2008}
}
Comments
14 pages