## Decay rate for perturbations of stationary discrete shocks for convex scalar conservation laws

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- by Hailiang Liu and Jinghua Wang PDF
- Math. Comp.
**66**(1997), 69-84 Request permission

## Abstract:

This paper is to study the decay rate for perturbations of stationary discrete shocks for the Lax-Friedrichs scheme approximating the scalar conservation laws by means of an elementary weighted energy method. If the summation of the initial perturbation over $(-\infty , j)$ is small and decays at the algebraic rate as $|j|\rightarrow \infty$, then the solution approaches the stationary discrete shock profiles at the corresponding rate as $n\rightarrow \infty$. This rate seems to be almost optimal compared with the rate in the continuous counterpart. Proofs are given by applying the weighted energy integration method to the integrated scheme of the original one. The selection of the time-dependent discrete weight function plays a crucial role in this procedure.## References

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## Additional Information

**Hailiang Liu**- Affiliation: Department of Mathematics, Henan Normal University, Xinxiang, 453002, P. R. China
- Email: guozm@sun.ihep.ac.cn
**Jinghua Wang**- Affiliation: Institute of Systems Science, Academia Sinica, Beijing 100080, P. R. China
- Email: jwang@iss06.iss.ac.cn
- Received by editor(s): May 19, 1995
- Received by editor(s) in revised form: January 31, 1996
- Additional Notes: The first author was supported in part by the National Natural Science Foundation of China and by the Institute of Mathematics, Academia Sinica.

The second author was supported in part by the National Natural Science Foundation of China and by The Texs Coordinating Board for Higher Education, Advanced Research Program. - © Copyright 1997 American Mathematical Society
- Journal: Math. Comp.
**66**(1997), 69-84 - MSC (1991): Primary 39A11; Secondary 35L65
- DOI: https://doi.org/10.1090/S0025-5718-97-00804-1
- MathSciNet review: 1377663