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Global logarithmic stability of a Cauchy problem for anisotropic wave equations

Author

Listed:
  • Mourad Bellassoued

    (University Tunis El Manar, ENIT-LAMSIN)

  • Mourad Choulli

    (Université de Lorraine)

Abstract

We discuss a Cauchy problem for anisotropic wave equations. Precisely, we address the question to know which kind of Cauchy data on the lateral boundary are necessary to guarantee the uniqueness of continuation of solutions of an anisotropic wave equation. In the case where the uniqueness holds, the natural problem that arise naturally in this context is to estimate the solutions, in some appropriate space, in terms of norms of the Cauchy data. We aim in this paper to convert, via a reduced Fourier–Bros–Iagolnitzer transform, the known stability of the Cauchy problem for anisotropic elliptic equations to stability of a Cauchy problem for anisotropic waves equations. By proceeding in that way one the main difficulties is to control the residual terms, induced by the reduced Fourier–Bros–Iagolnitzer transform, by a Cauchy data. Also, a uniqueness of continuation result, from Cauchy data, is obtained as byproduct of stability results.

Suggested Citation

  • Mourad Bellassoued & Mourad Choulli, 2023. "Global logarithmic stability of a Cauchy problem for anisotropic wave equations," Partial Differential Equations and Applications, Springer, vol. 4(3), pages 1-44, June.
    • Handle: RePEc:spr:pardea:v:4:y:2023:i:3:d:10.1007_s42985-023-00242-2
    DOI: 10.1007/s42985-023-00242-2
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    References listed on IDEAS

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    1. Mourad Choulli, 2021. "The unique continuation property for second order evolution PDEs," Partial Differential Equations and Applications, Springer, vol. 2(5), pages 1-46, October.
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    Cited by:

    1. Mourad Choulli, 2024. "Uniqueness of continuation for semilinear elliptic equations," Partial Differential Equations and Applications, Springer, vol. 5(4), pages 1-14, August.

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    1. Mourad Choulli, 2024. "Uniqueness of continuation for semilinear elliptic equations," Partial Differential Equations and Applications, Springer, vol. 5(4), pages 1-14, August.

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