/* Data file w_kdvru4.dat for the Korteweg-de Vries equation */ /* For use with symmgrp2009.max under Macsyma or Maxima */ /* number of independent variables: */ p : 2$ /* number of dependent variables: */ q : 1$ /* number of equations in the system: */ m : 1$ warnings:false$ parameters : [bb] $ sublisteqs :[all]$ subst_deriv_of_vi:true$ highest_derivatives : all$ info_given : true$ depends([f1,g1,g2],x[2]); depends(f2,[x[1],x[2]]); depends(eta2,x[2]); g1: (1/3)*diff(eta2,x[2]); f1: g1-diff(eta2,x[2]); eta1 : g1*x[1]+g2; phi1 : f1*u[1]+f2; e1 : u[1,[0,1]]+bb*u[1]*u[1,[1,0]]+u[1,[3,0]]; /* bb is just a constant parameter */ v1 : u[1,[0,1]]; /* end of data file w_kdvru4.dat */