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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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Generic uniqueness and stability for the mixed ray transform
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by Maarten V. de Hoop, Teemu Saksala, Gunther Uhlmann and Jian Zhai PDF
Trans. Amer. Math. Soc. 374 (2021), 6085-6144 Request permission

Abstract:

We consider the mixed ray transform of tensor fields on a three-dimensional compact simple Riemannian manifold with boundary. We prove the injectivity of the transform, up to natural obstructions, and establish stability estimates for the normal operator on generic three dimensional simple manifold in the case of $1+1$ and $2+2$ tensors fields.

We show how the anisotropic perturbations of averaged isotopic travel-times of $qS$-polarized elastic waves provide partial information about the mixed ray transform of $2+2$ tensors fields. If in addition we include the measurement of the shear wave amplitude, the complete mixed ray transform can be recovered. We also show how one can obtain the mixed ray transform from an anisotropic perturbation of the \text{Dirichlet-to-Neumann} map of an isotropic elastic wave equation on a smooth and bounded domain in three dimensional Euclidean space.

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Additional Information
  • Maarten V. de Hoop
  • Affiliation: Department of Computational and Applied Mathematics, Rice University, Houston, Texas 77005
  • MR Author ID: 311568
  • Email: mdehoop@rice.edu
  • Teemu Saksala
  • Affiliation: Department of Mathematics, North Carolina State University, Raleigh, North Carolina 27695
  • MR Author ID: 1277799
  • ORCID: 0000-0002-3785-9623
  • Email: tssaksal@ncsu.edu
  • Gunther Uhlmann
  • Affiliation: Department of Mathematics, University of Washington, Seattle, Washington 98195; and Institute for Advanced Study, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, People’s Republic of China
  • MR Author ID: 175790
  • Email: gunther@math.washington.edu
  • Jian Zhai
  • Affiliation: Institute for Advanced Study, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, People’s Republic of China
  • MR Author ID: 1206056
  • ORCID: 0000-0002-2374-8922
  • Email: jian.zhai@outlook.com, iasjzhai@ust.hk
  • Received by editor(s): April 1, 2020
  • Received by editor(s) in revised form: June 16, 2020, and August 16, 2020
  • Published electronically: June 7, 2021
  • Additional Notes: The first author was supported by the Simons Foundation under the MATH + X program, the National Science Foundation under grant DMS-1815143, and the corporate members of the Geo-Mathematical Imaging Group at Rice University.
    The second author was supported by the Simons Foundation under the MATH + X program and the corporate members of the Geo-Mathematical Imaging Group at Rice University. Part of this work was carried out during his visit to University of Washington, and he is grateful for hospitality and support.
    The third author was partially supported by NSF, a Walker Professorship at UW and a Si-Yuan Professorship at IAS, HKUST
  • © Copyright 2021 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 374 (2021), 6085-6144
  • MSC (2020): Primary 53C22, 53C65
  • DOI: https://doi.org/10.1090/tran/8342
  • MathSciNet review: 4302156