The classical residual-based a posteriori error estimator is proven to be both reliable and efficient for the discretization error in polygonal FEM based on Wachspress coordinates.
Virtual element method with adaptive refinement for problems of two- dimensional complex topology models from an engineering perspective
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An Adaptive Finite Element Method Based on Generalized Barycentric Coordinates
The classical residual-based a posteriori error estimator is proven to be both reliable and efficient for the discretization error in polygonal FEM based on Wachspress coordinates.