Finite Element Method for Elliptic Problems
Finite Element Method for Elliptic Problems
Anisotropic interpolations with application to nonconforming elements
Applied Numerical Mathematics
Conforming Rectangular Mixed Finite Elements for Elasticity
Journal of Scientific Computing
C0-Nonconforming Triangular Prism Elements for the Three-Dimensional Fourth Order Elliptic Problem
Journal of Scientific Computing
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In this paper two sets of C^N^-^1 conforming rectangular elements for linear elliptic problems of order 2N, N=1, are presented. One is b"i-(2N-1) element, well known b"i-linear element and b"i-cubic C^1 element (Bogner-Fox-Schmit) correspond to N=1 and N=2, respectively. Another one is b"i-2N element, well known b"i-quadratic element corresponds to N=1. The anisotropic error estimates are proved by the Newton's formulas for Hermite interpolation in two dimension and the special properties of the divided differences with coincident knots presented in this paper.