Formula_4634

\[\begin{gathered}-2\left(w_{0}+w_{1}\right)_{x}=4 a^{2}+\left(w_{0}-w_{1}\right)^{2}, \\\left(w_{0}-w_{1}\right)_{t}+3\left(w_{0 x}^{2}-w_{1 x}^{2}\right)+\left(w_{0}-w_{1}\right)_{x x x}=0 .\end{gathered}\]