nijso beishuizen wrote:
> Hello David,
>
> Yes, I have written an implementation of this algorithm and have
> looked at ode1_lie to
> get ideas. I knew there were problems with ode1_lie so I've decided to
> write a new implementation
> to see if I could figure what the problems were. One problem was that
> the integrating factor can not depend
> on y in the implemented method, lie_exact was not general enough (see
> Ibragimov, CRC handbook..).
> Another problem that I have right now is that I need to be able to
> represent implicit solutions in a nice way.
>
> I am now able to get the solutions of the first three examples given
> in the paper. I will test the fourth example
> when this issue is resolved and then see about the kamke testsuite.
>
> Regards,
> Nijso
>
Excellent. I hope you will contribute any improvements to this codeto
the maxima project. I will be happy to help with this.