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    CONVERGENCE ANALYSIS OF TWO NUMERICAL SCHEMES APPLIED TO A NONLINEAR ELLIPTIC PROBLEM

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    For a given nonlinear problem discretized by standard finite elements, we propose two iterative schemes to solve the discrete problem. We prove the well-posedness of the corresponding problems and their convergence. Next, we construct error indicators and prove optimal a posteriori estimates where we treat separately the discretization and linearization errors. Some numerical experiments confirm the validity of the schemes and allow us to compare them
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