Certain 2-stable embeddings (Q1371927)
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scientific article; zbMATH DE number 1083971
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Certain 2-stable embeddings |
scientific article; zbMATH DE number 1083971 |
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Certain 2-stable embeddings (English)
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23 June 1998
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In the 1930's Chogoshvili made the assertion that for each \(k\)-dimensional compactum \(X\subset \mathbb{R}^n\), there exists an \((n-k)\)-dimensional plane \(P\subset\mathbb{R}^n\) such that for some \(\varepsilon>0\), every map \(f:X\to \mathbb{R}^n\) with \(|x-f(x) |< \varepsilon\) for all \(x\in X\), has the property that \(f(X) \cap P\neq \emptyset\). A gap in his proof was found in the 1980's and recently, \textit{A. N. Dranishnikov} constructed a counterexample [Proc. Am. Math. Soc. 125, No. 7, 2155-2160 (1997; Zbl 0879.55001)]. The authors show that, on the other hand, Chogoshvili's claim is valid for each 2-dimensional \(LC^1\)-compactum, and hence each 2-dimensional disk. They also establish a local path-connectification of Dranishnikov's counterexample.
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0.8651183
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