We present conditions under which a linear homogeneous second-order equation is nonoscillatory on a semiaxis and conditions under which its solutions have infinitely many zeros.
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C. Sturm, “Mémoire sur les équations différentielles linéaires du deuxième ordre,” J. Math. Pures Appl., 1, No. 1, 106–186 (1836).
A. Kneser, “Untersuchungen über die reellen Nullstellen der Integrale linearer Differentialgleichungen,” Math. Ann., 42, 409–435 (1893).
E. Hille, “Nonoscillation theorem,” Trans. Amer. Math. Soc., 64, 234–252 (1948).
P. Hartman, “On the linear logarithmico-exponential differential equation of the second order,” Amer. J. Math., 70, 768–779 (1948).
P. Hartman, Ordinary Differential Equations, Wiley, New York (1964).
R. Bellman, Stability Theory of Differential Equations, McGraw-Hill, New York (1953).
I. T. Kiguradze and T. A. Chanturiya, “On the asymptotic behavior of solutions of the equation u″ + a(t)u = 0,” Differents. Uravn., 6, No. 6, 1115–1117 (1970).
S. D. Wray, “Integral comparison theorems in oscillation theory,” J. London Math. Soc., 2, No. 8, 595–606 (1974).
N. V. Matveev, Methods for Integration of Ordinary Differential Equations [in Russian], Vyshéishaya Shkola, Minsk (1974).
V. E. Slyusarchuk, “Strengthening of the Kneser theorem on zeros of the solutions of the equation y″ + p(x) y = 0,” Ukr. Mat. Zh., 48, No. 4, 520–524 (1996); English translation: Ukr. Math. J., 48, No. 4, 576–581 (1996).
V. E. Slyusarchuk, “Generalization of the Kneser theorem on zeros of solutions of the equation y″ + p(t) y = 0,” Ukr. Mat. Zh., 59, No. 4, 571–576 (2007); English translation: Ukr. Math. J., 59, No. 4, 639–644 (2007).
V. M. Evtukhov and N. S. Vasil’eva, “Conditions of oscillatory and nonoscillatory nature of solutions for a class of second-order semilinear differential equations,” Ukr. Mat. Zh., 59, No. 4, 458–466 (2007); English translation: Ukr. Math. J., 59, No. 4, 513–522 (2007).
G. M. Fikhtengol’ts, A Course in Differential and Integral Calculus [in Russian], Vol. 1, Nauka, Moscow (1966).
V. E. Slyusarchuk, General Theorems on Convergence of Numerical Series [in Ukrainian], Rivne National Technical University, Rivne (2001).
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Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 62, No. 12, pp. 1705–1714, December, 2010.
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Slyusarchuk, V.Y. Strengthening of the Kneser theorem on zeros of solutions of the equation u″ + q(t)u = 0 using one functional equation. Ukr Math J 62, 1978–1988 (2011). https://doi.org/10.1007/s11253-011-0483-2
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DOI: https://doi.org/10.1007/s11253-011-0483-2