A note on convergence of V-cycle nonconforming multigrid methods1

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In this paper, the nonconforming multigrid methods are studied, i.e., the fine mesh spaces and coarse mesh spaces also use the same nonconforming finite element. Contrary to the observation by Chen [Convergence of multigrid method for nonconforming method, pre print, 1996], even if quadratic forms are not changed on coarse meshes, V-cycle nonconforming multigrid methods still can converge. The key of our methods is the choice of a “good” intergrid operator. Moreover, optimal convergent order of our V-cycle nonconforming multigrid methods is obtained.

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论文评审过程:Received 8 September 1997, Available online 28 July 1999.

论文官网地址:https://doi.org/10.1016/S0096-3003(98)10079-6