Abstract
In this paper, we first construct some explicit solutions to the b-family of equations, which will become unbounded in a finite time. Then, we investigate the asymptotic stability of the aforementioned singular solutions of the b-family of equations in the Sobolev space \(H^s\) with \(s>\frac{7}{2}\). It is also interesting to point out that this stability highly depends on the values of parameter b, that is, \(b\in (-1,2]\). The proof is based on the detailed analysis on the estimates of the perturbed solutions and the properties of the corresponding linear operators.
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Acknowledgements
The authors would like to thank the anonymous referee very much for valuable comments and suggestions, in particular for pointing out Ref. [1] and references therein to their attention, which contribute to improve the manuscript. The work was supported by the Anhui Provincial Natural Science Foundation (2108085MA03) and research funds from Zhejiang Normal University (Nos. YS304222929 and ZZ323205020522016004).
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Communicated by Joachim Escher.
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Huang, SJ., Wu, LF. Stability of singular solutions to the b-family of equations. Monatsh Math 204, 63–79 (2024). https://doi.org/10.1007/s00605-024-01964-0
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DOI: https://doi.org/10.1007/s00605-024-01964-0