Some geometric properties of closed space curves and convex bodies
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V. V. Makeev
Translated by: B. M. Bekker - St. Petersburg Math. J. 16 (2005), 815-820
- DOI: https://doi.org/10.1090/S1061-0022-05-00880-0
- Published electronically: September 23, 2005
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Abstract:
The main results of the paper are as follows.
1. On each smooth closed oriented curve in $\mathbb {R}^n$, there exist two points the oriented tangents at which form an angle greater than $\pi /2+\sin ^{-1}\frac 1{n-1}$.
2. If $n$ is odd, then an $(n+1)$-gon with equal sides and lying in a hyperplane can be inscribed in each smooth closed Jordan curve in $\mathbb {R}^n$. In particular, a rhombus can be inscribed in each closed curve in $\mathbb {R}^3$.
3. A right prism with rhombic base and an arbitrary ratio of the base edge to the lateral edge can be inscribed in each smooth strictly convex body $K\subset \mathbb {R}^3$.
References
- H. B. Griffiths, The topology of square pegs in round holes, Proc. London Math. Soc. (3) 62 (1991), no. 3, 647–672. MR 1095236, DOI 10.1112/plms/s3-62.3.647
- L. G. Šnirel′man, On certain geometrical properties of closed curves, Uspehi Matem. Nauk 10 (1944), 34–44 (Russian). MR 0012531
Bibliographic Information
- V. V. Makeev
- Affiliation: Department of Mathematics and Mechanics, St. Petersburg State University, Universitetskiĭ Prospekt 28, Staryĭ Peterhof, St. Petersburg 198904, Russia
- Received by editor(s): September 16, 2003
- Published electronically: September 23, 2005
- Additional Notes: This work was supported by the SS Program (grant no. 1914.2003.1).
- © Copyright 2005 American Mathematical Society
- Journal: St. Petersburg Math. J. 16 (2005), 815-820
- MSC (2000): Primary 51H99
- DOI: https://doi.org/10.1090/S1061-0022-05-00880-0
- MathSciNet review: 2106668