# American Institute of Mathematical Sciences

August  2011, 4(4): 791-800. doi: 10.3934/dcdss.2011.4.791

## Symmetries in an overdetermined problem for the Green's function

 1 SISSA, via Bonomea 265, 34136 Trieste, Italy 2 Dipartimento di Matematica "U. Dini", Università degli Studi di Firenze, viale Morgagni 67/A, 50134 Firenze, Italy

Received  September 2009 Revised  January 2010 Published  November 2010

We consider in the plane the problem of reconstructing a domain from the normal derivative of its Green's function with pole at a fixed point in the domain. By means of the theory of conformal mappings, we obtain existence, uniqueness, (non-spherical) symmetry results, and a formula relating the curvature of the boundary of the domain to the normal derivative of its Green's function.
Citation: Virginia Agostiniani, Rolando Magnanini. Symmetries in an overdetermined problem for the Green's function. Discrete & Continuous Dynamical Systems - S, 2011, 4 (4) : 791-800. doi: 10.3934/dcdss.2011.4.791
##### References:
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##### References:
 [1] G. Alessandrini and E. Rosset, Symmetry of singular solutions of degenerate quasilinear elliptic equations, Rend. Sem. Mat. Univ. Trieste, 39 (2007), 1-8.  Google Scholar [2] P. L. Duren, "Theory of $H^p$ Spaces," Academic Press, New York, 1970. Google Scholar [3] P. L. Duren, "Univalent Functions," Springer-Verlag, New York, 1983. Google Scholar [4] L. E. Fraenkel, "An Introduction to Maximum Principles and Symmetry in Elliptic Problems," Cambridge University Press, Cambridge, 2000. Google Scholar [5] G. M. Goluzin, "Geometric Theory of Functions of a Complex Variable," American Mathematical Society, Providence, 1969. Google Scholar [6] B. Gustafsson and A. Vasil'ev, "Conformal and Potential Analysis in Hele-Shaw Cells," Birkhäuser Verlag, Basel, 2006. Google Scholar [7] P. Koosis, "Introduction to $H_p$ Spaces," Cambridge University Press, Cambridge, 1998. Google Scholar [8] J. L. Lewis and A. Vogel, On some almost everywhere symmetry theorems, in "Progr. Nonlinear Differential Equations Appl.," 7, Birkhäuser Boston, Massachusetts, (1992), 347-374.  Google Scholar [9] A. I. Markushevich, "Theory of Functions of a Complex Variable," Prentice-Hall, Englewood Cliffs, 1965. Google Scholar [10] L. E. Payne and P. W. Schaefer, Duality theorems in some overdetermined boundary value problems, Math. Meth. Appl. Sci., 11 (1989), 805-819. doi: doi:10.1002/mma.1670110606.  Google Scholar [11] J. Privalov, Sur les fonctions conjuguées, Bulletin de la S. M. F., 44 (1916), 100-103. Google Scholar [12] M. Sakai, "Quadrature Domains," Springer-Verlag, Berlin, 1982. Google Scholar [13] J. Serrin, A symmetry problem in potential theory, Arch. Rational Mech. Anal., 43 (1971), 304-318. doi: doi:10.1007/BF00250468.  Google Scholar [14] H. F. Weinberger, Remark on the preceding paper of Serrin, Arch. Rational Mech. Anal., 43 (1971), 319-320. doi: doi:10.1007/BF00250469.  Google Scholar
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