Geodesic
Estimates in the Hardy-Sobolev space of the annulus and stability result
Czechoslovak Mathematical Journal, Tome 63 (2013) no. 2, pp. 481-495 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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The main purpose of this work is to establish some logarithmic estimates of optimal type in the Hardy-Sobolev space $H^{k,\infty }$; $k \in {\mathbb {N}}^*$ of an annular domain. These results are considered as a continuation of a previous study in the setting of the unit disk by L. Baratchart and M. Zerner, On the recovery of functions from pointwise boundary values in a Hardy-Sobolev class of the disk, J. Comput. Appl. Math. 46 (1993), 255–269 and by S. Chaabane and I. Feki, Optimal logarithmic estimates in Hardy-Sobolev spaces $H^{k,\infty }$, C. R., Math., Acad. Sci. Paris 347 (2009), 1001–1006. As an application, we prove a logarithmic stability result for the inverse problem of identifying a Robin parameter on a part of the boundary of an annular domain starting from its behavior on the complementary boundary part.
The main purpose of this work is to establish some logarithmic estimates of optimal type in the Hardy-Sobolev space $H^{k,\infty }$; $k \in {\mathbb {N}}^*$ of an annular domain. These results are considered as a continuation of a previous study in the setting of the unit disk by L. Baratchart and M. Zerner, On the recovery of functions from pointwise boundary values in a Hardy-Sobolev class of the disk, J. Comput. Appl. Math. 46 (1993), 255–269 and by S. Chaabane and I. Feki, Optimal logarithmic estimates in Hardy-Sobolev spaces $H^{k,\infty }$, C. R., Math., Acad. Sci. Paris 347 (2009), 1001–1006. As an application, we prove a logarithmic stability result for the inverse problem of identifying a Robin parameter on a part of the boundary of an annular domain starting from its behavior on the complementary boundary part.
DOI : 10.1007/s10587-013-0032-2
Classification : 30C40, 30H10, 35R30
Keywords: annular domain; Poisson kernel; Hardy-Sobolev space; logarithmic estimate; Robin parameter 
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Feki, Imed. Estimates in the Hardy-Sobolev space of the annulus and stability result. Czechoslovak Mathematical Journal, Tome 63 (2013) no. 2, pp. 481-495. doi: 10.1007/s10587-013-0032-2

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