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JOURNALS // Izvestiya of Saratov University. Mathematics. Mechanics. Informatics // Archive

Izv. Saratov Univ. Math. Mech. Inform., 2012 Volume 12, Issue 3, Pages 37–44 (Mi isu311)

This article is cited in 13 papers

Mathematics

Oval lines of the hyperbolic plane of positive curvature

L. N. Romakina

Saratov State University, Chair of Geometry

Abstract: The classification of real nondegenerate second-order lines of the hyperbolic plane $\hat H$ of positive curvature is obtained. It is proved that the basic geometric covariants and the property of line to be convex (nonconvex) determine seven types of intrinsic oval lines and eight types of nonintrinsic oval line on $\hat H$. For every intrinsic oval lines the associate projective frame is constructed and the canonical equation is received.

Key words: hyperbolic plane $\hat H$ of positive curvature, oval line of the plane $\hat H$, classification of intrinsic oval lines of the plane $\hat H$.

UDC: 514.133

DOI: 10.18500/1816-9791-2012-12-3-37-44



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