TY - JOUR AU - V. M. Evtukhov AU - N. S. Vasileva PY - 2007/04/25 Y2 - 2024/03/29 TI - Conditions of oscillatory or nonoscillatory nature of solutions for a class of second-order semilinear differential equations JF - Ukrains’kyi Matematychnyi Zhurnal JA - Ukr. Mat. Zhurn. VL - 59 IS - 4 SE - Research articles DO - UR - https://umj.imath.kiev.ua/index.php/umj/article/view/3320 AB - For a class of second-order semilinear differential equations, we prove the theorems on oscillatory or nonoscillatory nature of all proper solutions. These theorems are analogs of the well-known Kneser theorems for linear differential equations. ER -