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ALMOST AUTOMORPHIC SOLUTIONS FOR DIFFERENTIAL EQUATIONS WITH PIECEWISE CONSTANT ARGUMENT

Part of: Functional-differential and differential-difference equations Abstract harmonic analysis

Published online by Cambridge University Press:  26 November 2013

LI-LI ZHANG  and
HONG-XU LI
LI-LI ZHANG*
Affiliation:
Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, PR China
HONG-XU LI
Affiliation:
Department of Mathematics, Sichuan University, Chengdu, Sichuan 610064, PR China email [email protected]
*
✉[email protected]
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Abstract

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Using the method of exponential dichotomies, we establish a new existence and uniqueness theorem for almost automorphic solutions of differential equations with piecewise constant argument of the form

$$\begin{eqnarray*}{x}^{\prime } (t)= A(t)x(t)+ B(t)x(\lfloor t\rfloor )+ f(t), \quad t\in \mathbb{R} ,\end{eqnarray*}$$
where $\lfloor \cdot \rfloor $ denotes the greatest integer function, and $A(t), B(t): \mathbb{R} \rightarrow { \mathbb{R} }^{q\times q} $, $f(t): \mathbb{R} \rightarrow { \mathbb{R} }^{q} $ are all almost automorphic.

Keywords

exponential dichotomyalmost automorphic functionalmost automorphic sequencepiecewise constant argument

MSC classification

Secondary: 43A60: Almost periodic functions on groups and semigroups and their generalizations (recurrent functions, distal functions, etc.); almost automorphic functions 34K34: Hybrid systems
Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 90 , Issue 1 , August 2014 , pp. 99 - 112
Copyright
Copyright ©2013 Australian Mathematical Publishing Association Inc. 

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