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On nonlinear oscillations for a second order delay equation. (English) Zbl 0169.11401

##### Keywords:
ordinary differential equations
Full Text:
##### References:
 [1] Atkinson, F. V.: On second-order nonlinear oscillations. Pacific J. Math. 5, 643-647 (1955) · Zbl 0065.32001 [2] Coffman, C. V.; Ullrich, D. F.: On the continuation of solutions of a certain nonlinear differential equation. Monatshefte für math. 71, 385-392 (1967) · Zbl 0153.40204 [3] El’sgol’ts, L. E.: Introduction to the theory of differential equations with deviating arguments. (1966) [4] J. W. Heidel. A nonoscillation theorem for a nonlinear second-order differential equation. Proc. Amer. Math. Soc. To appear. [5] J. W. Heidel. The J. Barrett Seminar, University of Tennessee. To appear. [6] Kiguradze, I. T.: Translated as soviet math. Dokl.. Soviet math. Dokl. 3, 649-652 (1962) [7] Ličko, Imrich; Švec, Marko: Le caractère oscillatoire des solutions de l’équation $y(n) + f(x)$y${\alpha} = 0$, n 1. Czech math. J. 13, 481-491 (1963) · Zbl 0123.28202 [8] Utz, W. R.: Properties of solutions of u” + $g(t)$u2n - 1 = 0, II. Monatshefte für math. 69, 353-361 (1965) · Zbl 0144.10701