Abstract
This paper deals with a monotone iterative method for solving nonlinear singularly perturbed parabolic problems. Monotone sequences, based on the method of upper and lower solutions, are constructed for a nonlinear difference scheme which approximates the nonlinear parabolic problem. This monotone convergence leads to the existence-uniqueness theorem. The monotone sequences possess quadratic convergence rate. An analysis of uniform convergence of the monotone iterative method to the solutions of the nonlinear difference scheme and to the continuous problem is given. Numerical experiments are presented.
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Boglaev, I. Uniform quadratic convergence of monotone iterates for nonlinear singularly perturbed parabolic problems. Numer Algor 64, 607–631 (2013). https://doi.org/10.1007/s11075-012-9682-7
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DOI: https://doi.org/10.1007/s11075-012-9682-7
Keywords
- Nonlinear parabolic problem
- Singular perturbation
- Monotone iterative method
- Quadratic convergence
- Uniform convergence