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- W3149170075 abstract "In this paper, we first introduce interpolation operator of projection type in three dimen- sions, from which we derive weak estimates for tricubic block finite elements. Then using the estimate for the W 2, 1-seminorm of the discrete derivative Green’s function and the weak estimates, we show that the tricubic block finite element solution uh and the tricubic interpolant of projection type Πh3u have superclose gradient in the pointwise sense of the L∞-norm. Finally, this supercloseness is applied to superconvergence analysis, and the global superconvergence of the finite element approximation is derived." @default.
- W3149170075 created "2021-04-13" @default.
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- W3149170075 date "2009-01-01" @default.
- W3149170075 modified "2023-09-24" @default.
- W3149170075 title "Superconvergence of tricubic block finite elements" @default.
- W3149170075 hasPublicationYear "2009" @default.
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