Hi Mohamad,
You need to create the two FESystems as follows:
FESystem[FE_Q(1)^3-FE_Nothing^2] and FESystem[FE_Nothing^3-FE_Q(1)^2].
This way the first three variables u1, u2 and u3 will be only defined in
the first domain and in the second domain we define u1 and u2 as the last
two variables.
which exist in the first base element in one FESystem
> still exist in the first base base element in the other FESystem but are
> represented by FE_Nothing instead of FE_Q elements.
>
> Thanks,
> Mohamad
>
> On Sun, Apr 7, 2024 at 11:52 PM julian...@gmail.com
> wrote:
>
