Abstract
We discuss an overdetermined problem in planar multiply connected domains Ω. This problem is solvable in Ω if and only if Ω is a quadrature domain carrying a solid-contour quadrature identity for analytic functions. At the same time the existence of such quadrature identity is equivalent to the solvability of a special boundary value problem for analytic functions. We give a complete solution of the problem in some special cases and discuss some applications concerning the shape of electrified droplets and small air bubbles in a fluid flow.
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The research of the first author was supported by grant DMS-0139008 from the National Science Foundation; the research of the second author was supported by grant DMS-0412908 from the National Science Foundation.
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Khavinson, D., Solynin, A.Y. & Vassilev, D. Overdetermined Boundary Value Problems, Quadrature Domains and Applications. Comput. Methods Funct. Theory 5, 19–48 (2005). https://doi.org/10.1007/BF03321084
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DOI: https://doi.org/10.1007/BF03321084