CombinatorialMultigrid.make_preconditioner
— Methodfunction pfun = make_preconditioner(H) Make preconditioner
CombinatorialMultigrid.preconditioner_sd
— Methodfunction x = preconditioner_sd(b,H) preconditioner sd
CombinatorialMultigrid.update_groups_
— Methodfunction C1 = update_groups_(A, C, dA_)
update groups based on nodes with low effective degree
# Arguments
-`A`: Laplacian