## Differential and Integral Equations

- Differential Integral Equations
- Volume 8, Number 6 (1995), 1407-1452.

### Chaotic motion generated by delayed negative feedback. I. A transversality criterion

Bernhard Lani-Wayda and Hans-Otto Walther

#### Abstract

We study the equation $$ x'(t) = g(x(t-1)) \tag{$g$} $$ for smooth functions $g:\mathbb{R} \rightarrow \mathbb{R} $ satisfying $ \xi g(\xi)<0 $ for $ \xi \neq 0, $ and the equation $$ x'(t) = b(t)x(t-1) \tag {$b$} $$ with a periodic coefficient $b:\mathbb{R} \rightarrow (-\infty,0)$. Equation $(b)$ generalizes variational equations along periodic solutions $y$ of equation $(g)$ in case $g'(\xi) < 0$ for all $\xi \in y(\mathbb{R} )$. We investigate the largest Floquet multipliers of equation $(b)$ and derive a characterization of vectors transversal to stable manifolds of Poincar\'e maps associated with slowly oscillating periodic solutions of equation $(g)$. The criterion is used in Part II of the paper in order to find $g$ and $y$ so that a Poincar\'e map has a transversal homoclinic trajectory, and a hyperbolic set on which the dynamics are chaotic.

#### Article information

**Source**

Differential Integral Equations, Volume 8, Number 6 (1995), 1407-1452.

**Dates**

First available in Project Euclid: 15 May 2013

**Permanent link to this document**

https://projecteuclid.org/euclid.die/1368638174

**Mathematical Reviews number (MathSciNet)**

MR1329849

**Zentralblatt MATH identifier**

0827.34059

**Subjects**

Primary: 58F13

Secondary: 34K15 39B12: Iteration theory, iterative and composite equations [See also 26A18, 30D05, 37-XX]

#### Citation

Lani-Wayda, Bernhard; Walther, Hans-Otto. Chaotic motion generated by delayed negative feedback. I. A transversality criterion. Differential Integral Equations 8 (1995), no. 6, 1407--1452. https://projecteuclid.org/euclid.die/1368638174