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A remark on the optimal order of convergence of Wilson’s nonconforming element. (Chinese. English summary) Zbl 0607.65071

It is proved that the optimal order of convergence of Wilson’s nonconforming element in the energy norm is O(h).

MSC:

65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs
65N15 Error bounds for boundary value problems involving PDEs
35J05 Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation
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