Neuman, František Second order linear differential systems. (English) Zbl 0453.34006 Ann. Sci. Éc. Norm. Supér. (4) 13, 437-449 (1980). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents MSC: 34A30 Linear ordinary differential equations and systems 34C25 Periodic solutions to ordinary differential equations 37D40 Dynamical systems of geometric origin and hyperbolicity (geodesic and horocycle flows, etc.) 53D25 Geodesic flows in symplectic geometry and contact geometry 37G99 Local and nonlocal bifurcation theory for dynamical systems Keywords:linear differential systems of the second order; closed geodesics; Blaschke’s conjecture Citations:Zbl 0148.071; Zbl 0387.53010 PDFBibTeX XMLCite \textit{F. Neuman}, Ann. Sci. Éc. Norm. Supér. (4) 13, 437--449 (1980; Zbl 0453.34006) Full Text: DOI Numdam EuDML Link References: [1] A. L. BESSE , Manifolds All of Whose Geodesics are Closed (Ergebnisse, Vol. 93, Springer, Berlin, New York, 1978 ). MR 80c:53044 | Zbl 0387.53010 · Zbl 0387.53010 [2] W. A. COPPEL , Disconjugacy (Lecture Notes in Mathematics, Vol. 220, Springer, Berlin, New York, 1971 ). MR 57 #778 | Zbl 0224.34003 · Zbl 0224.34003 [3] L. W. GREEN , A Theorem of Hopf (Michigan Math. J., Vol. 5, 1958 , pp. 31-34). Article | MR 20 #4300 | Zbl 0134.39601 · Zbl 0134.39601 [4] H. W. GUGGENHEIMER , Differential Geometry , Dover Publ., Inc., New York, 1977 . MR 58 #12737 | Zbl 0357.53002 · Zbl 0357.53002 [5] F. NEUMAN , Linear Differential Equations of the Second Order and Their Applications (Rend. Math., Vol. 4, 1971 , pp. 559-617). MR 47 #534 | Zbl 0227.34005 · Zbl 0227.34005 This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.