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IMA Journal of Applied Mathematics 1977 20(2):191-198; doi:10.1093/imamat/20.2.191
© 1977 by Institute of Mathematics and its Applications
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On an Exact Boundary Technique

A. FREY, C. A. HALL and J. C. HEINRICH

Department of Mathematics and Statistics, University of Pittsburgh U.S.A.
Department of Civil Engineering, University of Wales

In Marshall & Mitchell (1973) a finite element was introduced which matches Dirichlet boundary data exactly and was compared with the standard bilinear finite element which matches such data at only a finite number of points on the boundary. Our purpose here is to compare these same two elements with respect to the energy norm and the process of minimizing the energy functional.


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