Published online by Cambridge University Press: 24 October 2008
For a suitable choice of E*, the solution as t becomes large of the equation
where Y is given independent of t over the space boundaries, tends to the ground state solution of the wave equation
with the same boundary conditions on P as on Y. As a preliminary to using this relation to solve wave equations in more than one variable, the solution of the equation
has been studied. Methods of numerical solution are discussed, and the convergence of these is examined. Some practical experiments using an electronic computing machine are described.