Hello,
I want to know how to handle hanging nodes. I read
DofMap::heterogenously_constrain_element_matrix_and_vector() and found
comments like
// The constrained matrix is built up as C^T K C.
// The constrained RHS is built up as C^T (F - K H)
Are there papers or books on the algorithm used in libmesh? Or what I
can do is just to read the code?
Thanks
--Junchao Zhang
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