Almost automorphic solutions represent a sophisticated generalisation of almost periodic functions and have become an increasingly influential concept in the study of differential equations. These ...

SIAM Journal on Applied Mathematics, Vol. 21, No. 3 (Nov., 1971), pp. 491-494 (4 pages) Let f(t,x,x') be locally Lipschitz continuous with respect to x and x'. Using differential inequality results, ...

In this paper we will prove the coexistence of unbounded solutions and periodic solutions for the asymmetric oscillator $\ddot{x}+f(\dot{x})+ax^{+}-bx^{-}=\varphi (t,x)$, where a and b are positive ...

A second-order system is one which can be described by a second-order differential equation. The files listed below are a combination of PDF tutorial documents, MATLAB Graphical User Interfaces (GUIs) ...