An interesting point in studying the oscillatory behavior of solutions of delay differential equations is the abbreviation of the conditions that ensure the oscillation of all solutions, especially when studying the noncanonical case. Therefore, this study aims to reduce the oscillation conditions of the fourth-order delay differential equations with a noncanonical operator. Moreover, the approach used gives more accurate results when applied to some special cases, as we explained in the examples.

中文翻译：

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四阶时滞微分方程振荡的简化和改进判据

研究延迟微分方程解的振荡行为的一个有趣点是确保所有解振荡的条件的缩写，尤其是在研究非正则情况时。因此，本研究旨在减少具有非规范算子的四阶延迟微分方程的振荡条件。此外，正如我们在示例中所解释的，当应用于某些特殊情况时，所使用的方法会给出更准确的结果。