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Sibirskii Matematicheskii Zhurnal, 1993, Volume 34, Number 3, Pages 118–121
(Mi smj1658)
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Boundedly isometric but not isometric spaces
A. V. Kuz'minykh
Abstract:
The existence of a continuum of smooth complete (in intrinsic metrics) surfaces $\mathcal{M}_{\alpha}\subset\mathbb{R}^n$, $n\ge3$, is proved such that are homeomorphic to $\mathbb{R}^{n-1}$, any two of which are not isometric but possess the following property: every bounded domain on the first surface is isometrically embeddable into the second surface (and vice versa). Also, we prove the existence of $2^\mathfrak{c}$ subsets in the plane $\mathbb{R}^2$? (where $\mathfrak{c}$ is the cardinality of the continuum) each of which has diameter 1 and is embeddable into any other, with all the subsets pairwise nonhomeomorphic.
Received: 19.06.1992
Citation:
A. V. Kuz'minykh, “Boundedly isometric but not isometric spaces”, Sibirsk. Mat. Zh., 34:3 (1993), 118–121; Siberian Math. J., 34:3 (1993), 500–503
Linking options:
https://www.mathnet.ru/eng/smj1658 https://www.mathnet.ru/eng/smj/v34/i3/p118
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Abstract page: | 206 | Full-text PDF : | 77 |
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