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Asymptotic behavior of a linear higher-order BBM-system with damping

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Abstract

The article deals with a class of Boussinesq system coupling two higher-order Benjamin–Bona–Mahony (BBM)-type equations. Introducing appropriate damping mechanisms, we study the asymptotic behavior in time of the corresponding damped models. This is done both in the case of internal and boundary damping. We first prove the global well-posedness of the systems and the convergence towards a solution which is null on a band. Then, applying a unique continuation property it follows that the origin is asymptotically stable for the damped models. Our proofs rely on the approach developed in Rosier (J Math Study 49:195–204, 2016) to study similar problems for the scalar BBM equation.

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Acknowledgements

The first author was supported by Capes and CNPq (Brazil). The second author was partially supported by CNPq (Brazil).

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Correspondence to Ademir F. Pazoto.

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Sierra Fonseca, O.A., Pazoto, A.F. Asymptotic behavior of a linear higher-order BBM-system with damping. Z. Angew. Math. Phys. 73, 231 (2022). https://doi.org/10.1007/s00033-022-01861-2

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  • DOI: https://doi.org/10.1007/s00033-022-01861-2

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