2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80278Taking the example of Koretweg--de Vries equation, it is shown that soliton solutions need not always be the consequence of the trade-off between the nonlinear terms and the dispersive term in the nonlinear differential equation. Even the ordinary one dimensional linear partial differential equation can produce a soliton.5 pages, no figures; corrected for post-script file problemPattern Formation and Solitonstext