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Fig. 1
Schematic representation of V-cycle and full multigrid with three grid levels. ⇒ means interpolating the full approximation, → means restricting the approximation and the residual, and ⇢ means interpolating the correction. The iteration parameters νFMG and ν1,2,3 are defined in Sect. 2, the parameter ν0 in Sect. 4.12.
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