Re: [deal.II] Question on the operator matrix (system matrix) of Step-20

On 2/1/20 8:25 AM, Krishnakumar Gopalakrishnan wrote: *__* Recalling that the above system matrix is the discretized version of the original (continuous) PDEs, this corresponds to the assembly of the bilinear form: (v,K−1u) −(divv,p) −(q,divu) * Now, the top-left block M of the matrix

[deal.II] Question on the operator matrix (system matrix) of Step-20

Once again, apologies for asking questions which are more oriented towards vector calculus than the deal.II library/code itself. In Step-20, under the introduction section on solvers, it says: "If we sort our degrees of freedom so that all velocity come before all pressure variables, then we