Volume 6, Number 4, 2016, Pages 1041-1048 DOI:10.11948/2016067 |
Convergence to equilibrium for a time semi-discrete damped wave equation |
Morgan Pierre,Philippe Rogeon |
Keywords:{\L}ojasiewicz-Simon inequality, gradient-like equation, backward Euler scheme. |
Abstract: |
We prove that the solution of the backward Euler scheme applied to a damped wave equation with analytic nonlinearity converges to a stationary solution as time goes to infinity. The proof is based on the {\L}ojasiewciz-Simon inequality. It is much simpler than in the continuous case, thanks to the dissipativity of the scheme. The framework includes the modified Allen-Cahn equation and the sine-Gordon equation. |
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