Formula_23151

\[\begin{gathered}\Psi(x, y, t, P)= \\=\frac{\theta(\omega(P)-e(x, y, t)) \theta(-e(0,0,0))}{\theta(\omega(P)-e(0,0,0)) \theta(-e(x, y, t))} \exp \left(\int_{P_{0}}^{P} \omega_{1} x+\omega_{2} y+\omega_{3} t\right) .\end{gathered}\]