Dr. Bangerth,
Thank you very much for your kind reply.
> This is one way to do it. You are just projecting J_tor to a finite
> element space and use that for output or further processing. As others
> have already noted, the only problem I can see is that computing
> solution_max may be inaccurate. This is because in general, if you have
> a finite element function
> u_h(x) = \sum_i \varphi_i(x) U_i
> then
> max_{x \in \Omega} u_h(x)
> is not the same as
> max_i U_i
>
> For (bi-,tri-)linear functions the two are the same but for higher order
> finite elements, that is not the case.
>
you mean that solution is not u_h(x) but U_i. is it right?
Then, is there other way to get maximum value of solution for higher order
finite elements?
Thank you.
Kyusik.
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