Development of approaches to the Myshkis problem on the stability of a first-order differential equation with aftereffect

Kirill M. Chudinov
Scopus Author ID: 55759745800
Researcher ID: 475163
1. Perm National Research Polytechnic University, Perm, Russia
cyril@list.ru
The material was received by the Editorial Board: 31.08.2025

We obtain sufficient stability conditions for a scalar linear nonautonomous first-order delay differential equation. The conditions are explicitly expressed in terms of parameters of the given equation, and strengthen existing results derived from the classical Myshkis theorems on $3/2$. We provide a detailed comparison of the new stability conditions with existing ones. The new approach yields significantly improved results when applied to equations with a single concentrated delay, and can be extended to broader classes of equations.

УДК 517.929


Keywords: differential equation, aftereffect, stability, Cauchy function, 3/2 Theorem.

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References: Kirill M. Chudinov Development of approaches to the Myshkis problem on the stability of a first-order differential equation with aftereffect. Mat. Trudy. 2026, 29, № 1. P. 142–162. DOI: 10.25205/1560-750X-2026-29-1-142-162