Hi, everyone
Now, I am wondering how algebraic method constrains hanging nodes. Whether
does it set the values at hanging nodes to zero? I output the matrix
assembled in libmesh using PetSC function, I find lots of zero values in
matrix. Because the matrix in Petsc is stored using sparse compressed strage
format, zero values should not appear. Could you give me some hints?
thanks a lot.
Regards,
Yujie
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