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arxiv: 0908.2229 · v5 · pith:JSC4L6TInew · submitted 2009-08-16 · 🧮 math.GN · math.AT

The topology of systems of hyperspaces determined by dimension functions

classification 🧮 math.GN math.AT
keywords gammacompactsubsetsubsetsdimensioninftynon-emptyalpha
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Given a non-degenerate Peano continuum $X$, a dimension function $D:2^X_*\to[0,\infty]$ defined on the family $2^X_*$ of compact subsets of $X$, and a subset $\Gamma\subset[0,\infty)$, we recognize the topological structure of the system $(2^X,\D_{\le\gamma}(X))_{\alpha\in\Gamma}$, where $2^X$ is the hyperspace of non-empty compact subsets of $X$ and $D_{\le\gamma}(X)$ is the subspace of $2^X$, consisting of non-empty compact subsets $K\subset X$ with $D(K)\le\gamma$.

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