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A necessary and sufficient condition for the existence of simple closed geodesics on regular tetrahedra in spherical space
A necessary and sufficient condition is obtained for the existence of a simple closed geodesic of type on a regular tetrahedron in spherical space. Bibliography: 6 titles.
期刊介绍:
The Russian original is rigorously refereed in Russia and the translations are carefully scrutinised and edited by the London Mathematical Society. The journal has always maintained the highest scientific level in a wide area of mathematics with special attention to current developments in:
Mathematical analysis
Ordinary differential equations
Partial differential equations
Mathematical physics
Geometry
Algebra
Functional analysis