
doi: 10.1007/bf01209617
Let \(X\) be a metrizable compactum. The space \(\text{exp} X = \{A \subset X\) is nonempty and compact\} with Hausdorff metric is said to be the hyperspace \(\text{exp} X\) of a space \(X\) with metric \(\rho\). A closed subspace \({\mathcal A}\) of \(\text{exp} X\) is called an embedding hyperspace if for every \(A \in \text{exp} X\) such that \(A \supset B\) for some \(B \in {\mathcal A}\) we have \(A \in {\mathcal A}\). \(GX\), the space of all embedding hyperspaces is considered as a subspace of \(\text{exp}^ 2 X\) with the induced metric. A continuous function \(\omega:GX \to R\) that satisfies the following conditions is called a Whitney map for the space of embedding hyperspaces: 1) \(\omega [X] = \{0\}\); 2) if \({\mathcal A}, {\mathcal B} \in GX\) and \({\mathcal A} \subset {\mathcal B} \neq {\mathcal A}\), then \(\omega ({\mathcal A}) < \omega ({\mathcal B})\). It is proved that Whitney maps exist. Theorem 1. Let \(X\) be a metrizable continuum. If \(\omega:GX \to [1;1]\) is a Whitney map, \(\omega/ \omega^{-1}(1,1)\) is a trivial fibering with its own Hilbert cube.
metrizable continuum, Continua and generalizations, metrizable compacta, Whitney map, metrizable compactum, embedding hyperspace, Hyperspaces in general topology, Hilbert cube, Compact (locally compact) metric spaces
metrizable continuum, Continua and generalizations, metrizable compacta, Whitney map, metrizable compactum, embedding hyperspace, Hyperspaces in general topology, Hilbert cube, Compact (locally compact) metric spaces
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