Mixed finite elements for second order elliptic problems in three variables
- Cite this article as:
- Brezzi, F., Douglas, J., Durán, R. et al. Numer. Math. (1987) 51: 237. doi:10.1007/BF01396752
Two families of mixed finite elements, one based on simplices and the other on cubes, are introduced as alternatives to the usual Raviart-Thomas-Nedelec spaces. These spaces are analogues of those introduced by Brezzi, Douglas, and Marini in two space variables. Error estimates inL2 andH−s are derived.