]>Minimization of Functional Majorant in a Posteriori Error Analysis Based on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>H</mml:mi><mml:mtext>(div)</mml:mtext></mml:math> Multigrid-Preconditioned CG Method : Table 3
Table 3: Number of CG/MPCG iterations (using stopping criterion (4.6) for 𝜀 = 1 0 − 6 ) for various nested uniform mesh levels.
Level Mesh size ℎ Problem size CG iterations MPCG iterations
0 1 5 2 2
1 2 − 1 16 5 5
2 2 − 2 56 15 8
3 2 − 3 208 45 10
4 2 − 4 800 108 11
5 2 − 5 3136 219 11
6 2 − 6 12416 349 11
7 2 − 7 49408 877 11
8 2 − 8 197120 1773 11
9 2 − 9 787456 3506 11