This paper is concerned with numerical stability of nonlinear systems of pantograph equations. Numerical methods based on (k,l)—algebraically stable Runge-Kutta methods are suggested. Global and ...

We reconsider the stability theory of boundary conditions for the wave equation from the point of view of energy techniques. We study, for the case of the homogeneous half-space, a large class of ...

Optical systems employ a rich array of physical effects which are described by well-understood equations. However, for all but the simplest devices these equations are typically too complex to permit ...