Annals of Mathematics · 1934 · 75 citations · 0 references
Natural SciencesMathematicsPhysicsGeometryCurved SpacetimeDifferential GeometryGeodesic MotionMetric GeometryRiemannian GeometrySpacetime GeometryClosed GeodesicsConstant Negative CurvatureCurvatureGeodesic EquationsGeodesic Motion On Riemannian ManifoldsGeodesic StructureStability Of Geodesics