Cycles on the Hyperbolic Plane of Positive Curvature
- Authors: Romakina L.N.1
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Affiliations:
- Saratov State University
- Issue: Vol 212, No 5 (2016)
- Pages: 605-621
- Section: Article
- URL: https://journals.rcsi.science/1072-3374/article/view/237105
- DOI: https://doi.org/10.1007/s10958-016-2693-5
- ID: 237105
Cite item
Abstract
We study properties of hyperbolic and elliptic cycles of a hyperbolic plane Ĥ of positive curvature. An analog of the Pythagorean theorem for a right triangle with a parabolic hypotenuse is proved. For each type of lines, we obtain formulas expressing the length of a chord of a hyperbolic cycle in terms of the radius of the cycle, the measure of the central angle corresponding to the chord, and the radius of curvature of Ĥ. The plane Ĥ is considered in the projective interpretation. Bibliography: 11 titles.
About the authors
L. N. Romakina
Saratov State University
Author for correspondence.
Email: romakinaln@mail.ru
Russian Federation, Saratov