Error estimators for a mixed method

We present two a-posteriori error estimators for elliptic partial differential equations, when we use a mixed method. One is based on a adequate evaluation of the residual of the finite element solution and the other on the solution of a local problem. We prove their equivalence with the norm of the...

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Autor principal: Alonso, Ana Esther
Formato: Articulo
Lenguaje:Inglés
Publicado: 1996
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Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/131106
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Sumario:We present two a-posteriori error estimators for elliptic partial differential equations, when we use a mixed method. One is based on a adequate evaluation of the residual of the finite element solution and the other on the solution of a local problem. We prove their equivalence with the norm of the error, when the data is locally smooth.