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arXiv · 1308.1427

Regions of Stability for a Linear Differential Equation with Two Rationally Dependent Delays

Joseph M. Mahaffy·Timothy C. Busken
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Abstract

Stability analysis is performed for a linear differential equation with two delays. Geometric arguments show that when the two delays are rationally dependent, then the region of stability increases. When the ratio has the form 1/n, this study finds the asymptotic shape and size of the stability region. For example, a delay ration of 1/3 asymptotically produces a stability region 44.3% larger than any nearby delay ratios, showing extreme sensitivity in the delays. The study provides a systematic and geometric approach to finding the eigenvalues on the boundary of stability for this delay differential equation. A nonlinear model with two delays illustrates how our methods can be applied.

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Joseph M. Mahaffy, Timothy C. Busken. 2013-08-06. Regions of Stability for a Linear Differential Equation with Two Rationally Dependent Delays. https://arxiv.org/abs/1308.1427

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