Abstract
We show that measurements of a Neumann-to-Dirichlet map, with either inputs or outputs restricted to part of the boundary, can determine an electric potential on that domain. Given a convexity condition on the domain, either the set on which measurements are taken, or the set on which input functions are supported, can be made to be arbitrarily small. The result is analogous to the result by Kenig, Sjöstrand, and Uhlmann for the Dirichlet-to-Neumann map. The main new ingredient in the proof is an improved Carleman estimate for the Schrödinger operator with appropriate boundary conditions. This is proved by Fourier analysis of a conjugated operator along the boundary of the domain.
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Astala, K., Päivärinta, L.: Calderón’s inverse conductivity problem in the plane. Ann. Math. 163, 265–299 (2006)
Bukhgeim, A.L., Uhlmann, G.: Recovering a potential from partial Cauchy data. Commun. PDE 27(3,4), 653–668 (2002)
Caro, P., Ola, P., Salo, M.: Inverse boundary value problem for Maxwell equations with local data. Commun. PDE 34(11), 1425–1464 (2009)
Chung, F.J.: A partial data result for the magnetic Schrödinger inverse problem. Anal. PDE 7, 117–157 (2014)
Dos Santos Ferreira, D., Kenig, C.E., Sjöstrand, J., Uhlmann, G.: Determining a magnetic Schrödinger operator from partial cauchy data. Commun. Math. Phys. 271, 467–488 (2007)
Guillarmou, C., Tzou, L.: Calderón inverse problem with partial Cauchy data on Riemannian surfaces. Duke Math. J. 158, 83–120 (2011)
Haberman, B., Tataru, D.: Uniqueness in Calderón’s problem with Lipschitz conductivities. Duke Math. J. 162, 497–516 (2013)
Hyvönen, N., Piiroinen, P., Seiskari, O.: Point measurements for a Neumann-to-Dirichlet map and the Calderón problem in the plane. SIAM J. Math. Anal. 44, 3526–3536 (2012)
Isakov, V.: On uniqueness in the inverse conductivity problem with local data. Inverse Probab. Image 1(1), 95–105 (2007)
Imanuvilov, O., Uhlmann, G., Yamamoto, M.: The Calderón problem with partial data in two dimensions. J. Am. Math. Soc. 23, 655–691 (2010)
Imanuvilov, O., Uhlmann, G., Yamamoto, M.: Inverse boundary value problem by partial data for Neumann-to-Dirichlet-map in two dimensions. http://arxiv.org/abs/1210.1255.
Knudsen, K., Salo, M.: Determining nonsmooth first order terms from partial boundary measurements. Inverse Probab. Image 1, 349–369 (2007)
Kenig, C.E., Sjöstrand, J., Uhlmann, G.: The Calderón problem with partial data. Ann. Math. 165, 561–591 (2007)
Kenig, C.E., Salo, M.: The Calderón problem with partial data on manifolds and applications. Anal. PDE. 6, 2003–2048 (2013)
Kenig, C.E., Salo, M.: Recent progress in the Calderón problem with partial data. Contemp. Math. 615, 193–222 (2014)
Krupchyk, K., Uhlmann, G.: Uniqueness in an inverse boundary problem for a magnetic Schrödinger operator with a bounded magnetic potential. Commun. Math. Phys. 312, 1781–1801 (2012)
Kohn, R., Vogelius, M.: Determining conductivity by boundary measurements. Commun. Pure Appl. Math. 37, 289–298 (1984)
Nachman, A.: Reconstructions from boundary measurements. Ann. Math. 128, 531–587 (1988)
Salo, M., Tzou, L.: Inverse problems with partial data for a Dirac system: a Carleman estimate approach. Adv. Math. 225(1), 487–513 (2010)
Sylvester, J., Uhlmann, G.: A global uniqueness theorem for an inverse boundary problem. Ann. Math. 125, 153–169 (1987)
Zhang, G.: Uniqueness in the Calderón problem with partial data for less smooth conductivities. Inverse Probab. Image 28, 105008 (2012)
Zworski, M.: Semiclassical Analysis. AMS Press, New York (2012)
Acknowledgments
The author would like to thank Mikko Salo for introducing him to this problem, for sharing the idea behind Proposition 3.1, for reading over the manuscript, and for several other helpful conversations. This research was partially supported by the Academy of Finland. Part of this work was also done at the University of Chicago, and here the author would also like to thank Carlos Kenig for his time and support. The author would also like to thank the referee for several helpful comments.
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Communicated by Eric Todd Quinto.
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Chung, F.J. Partial Data for the Neumann-to-Dirichlet Map. J Fourier Anal Appl 21, 628–665 (2015). https://doi.org/10.1007/s00041-014-9379-5
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DOI: https://doi.org/10.1007/s00041-014-9379-5