Uwe Fechner

RUBI looks very promising. But which data set to use as starting point? What about: https://github.com/sympy/sympy/tree/master/sympy/integrals/rubi/rules The official test suits are only available in: - Axiom syntax - Maple syntax...

Just started to look at the first rule, second form for integrands of the form (a + b x) m. Program code: ``` Int[x_^m_.,x_Symbol] := x^(m+1)/(m+1) /; FreeQ[m,x] && NeQ[m,-1]...

I created the (nearly empty) package https://github.com/ufechner7/Rubi.jl The input I need from the Symbolics.jl developers is how to define the integrator interface.

This link https://juliacontrol.github.io/ControlSystems.jl/stable is working fine for me and points to 1.5.2 which is correct. Can this bug be closed?

That would be very kind! 👍

I don't want that Q is automatically replaced by 0.5ARaΓρ . It shall stay as Q. But sometimes you want the opposite, so I think you need a way to...

But if you are able to implement https://github.com/JuliaSymbolics/Symbolics.jl/issues/989 then this might not be needed any longer...

If you are interested in Flight Dynamics also have a look at: https://github.com/JinraeKim/FlightSims.jl Not based on Modia, though... Or at my flight controller (for kites, though): https://github.com/ufechner7/KiteViewer/blob/sim/src/RTSim.jl Uwe On 11/09/2021...

Would be very nice indeed... The C++ version of NOMAD can do it, not sure how difficult it would be to expose this functionality in the Julia wrapper...

If I use this line instead: ```julia @named sys = ODESystem(eqs, t; continuous_events = [norm([pos[1],pos[2],pos[3]]) ~ abs(L0)]) ``` it works, so it is really a problem related to using a...