/* Last updated: September 8, 2020 by Hereman in Boulder */

/* Data file s-HD-run4-Sep8-2020.dat for the Harry Dym (Dym Kruskal) equation: */
/* u_t - u^3 u_xxx = 0 */
/* Assign u[1] to u, x[1] to x, x[2] to t. */

/* For use with symmgrp2020.max under Maxima */

/* number of independent variables: */
p : 2$

/* number of dependent variables: */
q : 1$

/* number of equations in the system: */
m : 1$

warnings:false$
parameters : [] $
sublisteqs :[all]$
subst_deriv_of_vi:true$
highest_derivatives : all$

/* information is given this time. */
info_given : true$

depends(f1,[x[1],x[2]]);
depends(eta2,x[2]);

g1 : 2*k3;
g2 : k4;
f1 : g1*x[1] + g2;
f2 : 0;

eta1: k1 + k2*x[1] + k3*x[1]^2;
phi1: f1*u[1]+f2; 

e1 : u[1,[0,1]]-u[1]^3*u[1,[3,0]];
v1 : u[1,[0,1]];

/* end of data file s-HD-run4-Sep8-2020.dat */