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摘要:
This paper is concerned with the asymptotic stability of travelling wave front solutions with algebraic decay for n-degree Fisher-type equations. By detailed spectral analysis, each travelling wave front solution with non-critical speed is proved to be locally exponentially stable to perturbations in some exponentially weighted L-infinity spaces. Further by Evans function method and detailed semigroup estimates, the travelling wave fronts with non-critical speed are proved to be locally algebraically stable to perturbations in some polynomially weighted L-infinity spaces. It's remarked that due to the slow algebraic decay rate of the wave at +infinity, the Evans function constructed in this paper is an extension of the definitions in [1, 3, 7, 11, 21] to some extent, and the Evans function can be extended analytically in the neighborhood of the origin.
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来源 :
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS
ISSN: 1078-0947
年份: 2006
期: 1
卷: 16
页码: 47-66
1 . 1 0 0
JCR@2022
ESI学科: MATHEMATICS;
JCR分区:1
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