Abstract
Under what conditions can one conclude that a continuous function on a plane domain Ω is holomorphic, given that its restrictions to a collection of Jordan curves in Ω which cover Ω admit holomorphic extensions? We survey progress on this problem over the past 40 years, with an emphasis on recent results.
An erratum to this chapter can be found at http://dx.doi.org/10.1007/978-88-470-1947-8_24
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Acknowledgements
This work was partially supported by Israel Science Foundation Grants 688/08 and 395/07 and is a part of the European Science Foundation Networking Programme HCAA.
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We dedicate this paper to the memory of our friend Leon Ehrenpreis. Leon was fascinated by the strip problem, contributed to its solution [13], and led the way in generalizing it from a result concerning analytic functions to solutions of elliptic equations [14]. Indeed, one of his last major addresses, the opening lecture of the conference Integral Geometry and Tomography, delivered at Stockholm University on August 12, 2008, was entitled “The Strip Theorem for PDE”; see [15, II–IV].
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Agranovsky, M., Zalcman, L. (2012). Analyticity on Curves. In: Sabadini, I., Struppa, D. (eds) The Mathematical Legacy of Leon Ehrenpreis. Springer Proceedings in Mathematics, vol 16. Springer, Milano. https://doi.org/10.1007/978-88-470-1947-8_4
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DOI: https://doi.org/10.1007/978-88-470-1947-8_4
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