Previous |  Up |  Next

Article

References:
[1] C. D. Ahlbrand D. B. Hinton R. T. Lewis: The effect of variable change on oscillation and disconjugate criteria with application to spectral theory. J. Math. Anal. Appl. 81 (1981) 234-277. MR 0618771
[2] E. Barvínek: Quadratic phases of differential equations y" + q(t)y = 0. Arch. Math. 8 (1972) 63-78. MR 0326037
[3] R. Bellman: Introduction to matrix analysis. McGraw-Hill New York 1971. MR 0122820
[4] D. F. St. Mary: On transformation and oscillation of linear differential systems. Canad. J. Math. 29 (1977) 392-399. MR 0427744 | Zbl 0332.34028
[5] O. Došlý: A phase matrix of linear differential systems. to appear in Časopis pro pěstování matematiky. MR 0796568
[6] O. Došlý: The basic properties of phase matrices. to appear in Аrch. Math.
[7] V. А. Jakubovič: Uslovia kalebatělnosti i nekalebatělnosti linejnych kanoničeskich system. Dokl. Аkad. Nauk SSSR 124 (1959) 994-997. MR 0104880
[8] J. Radon: Zum Problem von Lagrange. Аbh. Math. Sem. Univ. Hambuгg 6 (1928) 273-279.
[9] W. T. Reid: Ordinary Differential Equations. John Wiley, New Yoгk 1971. MR 0273082 | Zbl 0212.10901
[10] R. L. Sternberg: Variational methods and non-oscillatory theorems for systems of differential equations. Duke Math. J. 19 (1952) 311-322. MR 0048668
Partner of
EuDML logo