On finite-dimensional maps

Details On finite-dimensional maps On finite-dimensional maps

2002-09-06

arxiv.org/abs/math/0209074v1

Mathematics

General Topology

11 pages

Scientific paper

Let $f\colon X\to Y$ be a perfect surjective map of metrizable spaces. It is shown that if $Y$ is a $C$-space (resp., $\dim Y\leq n$ and $\dim f\leq m$), then the function space $C(X,\uin^{\infty})$ (resp., $C(X,\uin^{2n+1+m})$) equipped with the source limitation topology contains a dense $G_{\delta}$-set $\mathcal{H}$ such that $f\times g$ embeds $X$ into $Y\times\uin^{\infty}$ (resp., into $Y\times\uin^{2n+1+m}$) for every $g\in\mathcal{H}$. Some applications of this result are also given.

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