L∞-ERROR ANALYSIS FOR A SYSTEM OF QUASIVARIATIONAL INEQUALITIES WITH NONCOERCIVE OPERATORS

This paper deals with a system of elliptic quasivariational inequalities with noncoercive operators. Two different approaches are developed to prove L∞-error estimates of a con-tinuous piecewise linear approximation. Copyright © 2006 M. Boulbrachene and S. Saadi. This is an open access article distrib-uted under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 1