Hello my friends, I'm working on problems with singularity fields. Is it possible to remove a constraint line/entry at specific DoF? Say at the edge of a corner in 3d, the two faces intersect at the corner are already interpolate with zero boundary condition. However I want to un-constraint the DoF exactly at the corner rather on faces (for FE_Q elements). Is there a function to remove constraint on already constrained DoFs?
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