Abstract
The space of divergence-free functions with vanishing normal flux on the boundary is approximated by subspaces of finite elements that have the same property. The easiest way of generating basis functions in these subspaces is considered.
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Korotov, S. On equilibrium finite elements in three-dimensional case. Applications of Mathematics 42, 233–242 (1997). https://doi.org/10.1023/A:1022421722236
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DOI: https://doi.org/10.1023/A:1022421722236