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External approximation of first order variational problemsvia W-1,p estimates

Published online by Cambridge University Press:  30 January 2008

Cesare Davini
Affiliation:
Dipartimento di Georisorse e Territorio, Via del Cotonificio 114, 33100 Udine, Italy; davini@uniud.it
Roberto Paroni
Affiliation:
Dipartimento di Architettura e Pianificazione, Università di Sassari, Palazzo del Pou Salit, Piazza Duomo, 07041 Alghero, Italy; paroni@uniss.it
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Abstract

Here we present an approximation method for a rather broad class of first order variational problems in spaces of piece-wise constant functions over triangulations of the base domain. The convergence of the method is based on an inequality involving $W^{-1, p}$ norms obtained by Nečas and on the general framework of Γ-convergence theory.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2008

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