Hey all,
I am writing a code for an optimal control problem based on dealii. For that
purpose I need the mass and stiffness matrices only on the interior nodes,
i.e.,
after calling apply_boundary_values() I have the matrix K and I want
\hat{K}=K(index,index) (in Matlab notation) where index indicates the
interior nodes. I then only want to work with \hat{K}.Thank you for any suggestions. Best, Martin
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