no. 2
Lagrange multipliers for higher order elliptic operators
ESAIM: Modélisation mathématique et analyse numérique, Tome 39 (2005) no. 2, pp. 419-429.

In this paper, the Babuška's theory of Lagrange multipliers is extended to higher order elliptic Dirichlet problems. The resulting variational formulation provides an efficient numerical squeme in meshless methods for the approximation of elliptic problems with essential boundary conditions.

DOI : 10.1051/m2an:2005013
Classification : 41A10, 41A17, 65N15, 65N30
Mots clés : elliptic operators, Dirichlet boundary-value problem, Lagrange multipliers 
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Zuppa, Carlos. Lagrange multipliers for higher order elliptic operators. ESAIM: Modélisation mathématique et analyse numérique, Tome 39 (2005) no. 2, pp. 419-429. doi : 10.1051/m2an:2005013. http://www.numdam.org/articles/10.1051/m2an:2005013/

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