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Quasi-norm a priori and a posteriori error estimates for the nonconforming approximation of p-Laplacian

Published: 01 August 2001 Publication History

Abstract

In this paper, we derive quasi-norm a priori and a posteriori error estimates for the Crouzeix-Raviart type finite element approximation of the p-Laplacian. Sharper a priori upper error bounds are obtained. For instance, for sufficiently regular solutions we prove optimal a priori error bounds on the discretization error in an energy norm when $1 < p \leq 2$. We also show that the new a posteriori error estimates provide improved upper and lower bounds on the discretization error. For sufficiently regular solutions, the a posteriori error estimates are further shown to be equivalent on the discretization error in a quasi-norm.

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    cover image Numerische Mathematik
    Numerische Mathematik  Volume 89, Issue 2
    August 2001
    205 pages

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    Springer-Verlag

    Berlin, Heidelberg

    Publication History

    Published: 01 August 2001

    Author Tags

    1. 49J40
    2. Mathematics Subject Classification (1991): 65N30

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