Hello Is it possible to enforce dirichlet BC in weak form, the so called primal mixed approach. An example is given here, see Remark 7.1.4
http://books.google.co.in/books?id=j7WmQ1yFjkAC&lpg=PP1&dq=quarteroni%20numerical%20approximation&pg=PA227#v=onepage&q&f=false This requires defining finite elements on the boundary. I dont remember seeing any examples in deal.ii which do this. praveen
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