For linear functional-differential equations of retarded and neutral types with infinitely many deviations and self-adjoint operator coefficients, we establish necessary and sufficient conditions for the absolute instability of the trivial solutions.

中文翻译：

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具有绝对不稳定解的线性泛函微分方程

对于具有无穷多偏差和自伴随算子系数的延迟型和中性型线性泛函微分方程，我们建立了平凡解绝对不稳定性的充分必要条件。