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Line 7: Other extensions of multigrid include techniques where no PDE and no geometrical problem background is used to construct the multilevel hierarchy. Such '''algebraic multigrid methods''' (AMG) construct their hierarchy of operators directly from the system matrix and thus become true black-box solvers for [[sparse matrices]]. The [[finite ~~elemente~~element method]] becomes multigrid by choosing linear [[wavelets]] as the basis. == Algorithm ==

Multigrid method: Difference between revisions