Abstract
Let c be a non-closed and bounded geodesic in a complete Riemannian manifold M. Assume that c is invariant under an isometry A of M and that c is not contained in the set of fixed points of A. We prove that, for some \({k\ge 2}\), the geodesic flow line ċ corresponding to c is dense in a k-dimensional torus N embedded in TM. In particular, every geodesic with initial vector in N is A-invariant.
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Bangert, V. Non-closed isometry-invariant geodesics. Arch. Math. 106, 573–580 (2016). https://doi.org/10.1007/s00013-016-0904-4
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DOI: https://doi.org/10.1007/s00013-016-0904-4