Hyperbolic Tetrahedron: Volume Calculation with Application to the Proof of the Schläfli Formula

Autor: I. Kh. Sabitov
Jazyk: English<br />Russian
Rok vydání: 2013
Předmět:
Zdroj: Моделирование и анализ информационных систем, Vol 20, Iss 6, Pp 149-161 (2013)
Druh dokumentu: article
ISSN: 1818-1015
2313-5417
Popis: We propose a new approach to the problem of calculations of volumes in the Lobachevsky space, and we apply this method to tetrahedra. Using some integral formulas, we present an explicit formula for the volume of a tetrahedron in the function of the coordinates of its vertices as well as in the function of its edge lengths. Finally, we give a direct analitic proof of the famous Schläfli formula for tetrahedra.
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