The paper provides an exposition of multigrid basics in a variational setting, presenting the V-cycle as an iterative solver and full multigrid as a direct solver for discretization-level accuracy at low cost.
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Multigrid Primer: Basic Principles
The paper provides an exposition of multigrid basics in a variational setting, presenting the V-cycle as an iterative solver and full multigrid as a direct solver for discretization-level accuracy at low cost.