On 6/1/20 8:24 AM, hussan zeb wrote:
how can solve preconditioner for 3x3 matrix inn step57
Hussan -- can you be more specific about your question? step-57 has a rather
lengthy discussion of how exactly the system is solved:
https://dealii.org/developer/doxygen/deal.II/step_57.html#TheSolverandPreconditioner
Best
W.
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