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Stepanov-like C(n)-pseudo almost automorphy and applications to some nonautonomous higher-order differential equations

Diagana T., Nelson V., N'Guerekata G. M.

Opuscula Mathematica

2012

Vol. 32, no. 3

455-471

In this paper we introduce and study a new concept called Stepanov-like C(n)-pseudo almost automorphy, which generalizes in a natural fashion both the notions of C(n)-pseudo almost periodicity and that of C(n)-pseudo almost automorphy recently introduced in the literature by the authors. Basic properties of these new functions are investigated. Furthermore, we study and obtain the existence of C(N+m)-pseudo almost automorphic solutions to some nonautonomous higher-order systems of differential equations with Stepanov-like C(m)-pseudo almost automorphic coefficients.

Construction of an integral manifold for linear differential-difference equations

Janglajew K. R., Valeev K. G.

Opuscula Mathematica

2006

Vol. 26, no. 3

465-470

In this paper we establish sufficient conditions for the existence of an asymptotic integral manifold of solutions of a linear system of differential-difference equations with a small parameter. This integral manifold is described by a linear system of differential equations without deviating argument.

Generalizon of a theorem of Datko and Pazy for Co-quasisemigroups

Cuc V.

Demonstratio Mathematica

2001

Vol. 34, nr 3

577-586

In this paper we consider dichotomic behaviors of Co-quasisemigroups in Banach spaces. The obtained results generalize the similar theorems obtained by Datko and Pazy for exponential stability and Preda and Megan for the exponential dichotomy of Co-semigroups, respectively.