Two families of mixed finite elements for second order elliptic problems
- Cite this article as:
- Brezzi, F., Douglas, J. & Marini, L.D. Numer. Math. (1985) 47: 217. doi:10.1007/BF01389710
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Two families of mixed finite elements, one based on triangles and the other on rectangles, are introduced as alternatives to the usual Raviart-Thomas-Nedelec spaces. Error estimates inL2(Ω) andH−5(Ω) are derived for these elements. A hybrid version of the mixed method is also considered, and some superconvergence phenomena are discussed.