Roy Stogner wrote: > > Would it suffice to have an elem_rate_solution available, which > contained (u_n-u_p)/deltat on each variable? I might be adding that > for one of my own applications and to make it simpler to write user > code with nonlinear mass matrices again. > --- > Roy > > It would be nice to have "(u_n-u_p)/deltat" or "u_p". I would prefer some "elem_old_solution" in DifferentiableSystem class.
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