Simple periodic boundary condition without dolfinx_mpc

[dokken]

Consider the following workaround (works in serial):

Periodic conditions for vector valued spaces

@cristian I tried to get the MPC strategy to work with Nedelec elements, but got into similar issues as you did (it is probably related to the facet orientation and dof orientation). Therefore, I decided to go down another route that I have wanted to try for a long time, which is to make the mesh topology periodic, as one would no longer need specialized assembly routines. Following is a prototype that works in serial: # Create a periodic mesh in serial # SPDX-License-Identifier: MIT # Autho…