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The classic Lusternik–Schnirelmann theorem states that there are three distinct simple periodic geodesics on any Riemannian 2-sphere . It has been proven by Y. Liokumovich, A. Nabutovsky and R. Rotman that the shortest three such curves have lengths bounded in terms of the diameter of . We show that at any point on there exist at least two distinct simple geodesic loops (geodesic segments that start and end at ) whose lengths are respectively bounded by and .

生成讲解博客的中文版本

生成AI智能校验的中文版本