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On the area of a trihedral on a hyperbolic plane of positive curvature
L. N. Romakina Chernyshevsky Saratov State University, Saratov, Russia
Abstract:
We prove a formula for the area of a trihedral on a hyperbolic plane
$\widehat H$ of positive curvature via the angles at its vertices.
Key words:
hyperbolic plane of positive curvature, de Sitter plane, trihedral, area of a trihedral.
UDC:
514.133 Received: 30.12.2013
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