2017
DOI: 10.1002/cpa.21696
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A Rigidity Result for Overdetermined Elliptic Problems in the Plane

Abstract: ABSTRACT. Let f : [0, +∞) → R be a (locally) Lipschitz function and Ω ⊂ R 2 a C 1,α domain whose boundary is unbounded and connected. If there exists a positive bounded solution to the overdetermined elliptic problemwe prove that Ω is a half-plane. In particular, we obtain a partial answer to a question raised by H. Berestycki, L. Caffarelli and L. Nirenberg in 1997.

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Cited by 33 publications
(20 citation statements)
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“…Second, Ros-Ruiz-Sicbaldi [31] proved that the BCN conjecture is true in dimension 2 for unbounded domains whose complement is unbounded, such domain must be a half-space. Also, Ros-Ruiz-Sicbaldi [31] constructed exteriors domains different from the exterior of a geodesic ball in R 2 for particular choices of the Lipschitz function f , this gives a counterexample to the BCN conjecture in R 2 in all its generality. Hence, combining the works of Pucci-Serrin, Reichel and Ros-Ruiz-Sicbaldi we have Theorem [27,29,31].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Second, Ros-Ruiz-Sicbaldi [31] proved that the BCN conjecture is true in dimension 2 for unbounded domains whose complement is unbounded, such domain must be a half-space. Also, Ros-Ruiz-Sicbaldi [31] constructed exteriors domains different from the exterior of a geodesic ball in R 2 for particular choices of the Lipschitz function f , this gives a counterexample to the BCN conjecture in R 2 in all its generality. Hence, combining the works of Pucci-Serrin, Reichel and Ros-Ruiz-Sicbaldi we have Theorem [27,29,31].…”
Section: Introductionmentioning
confidence: 99%
“…Also, Ros-Ruiz-Sicbaldi [31] constructed exteriors domains different from the exterior of a geodesic ball in R 2 for particular choices of the Lipschitz function f , this gives a counterexample to the BCN conjecture in R 2 in all its generality. Hence, combining the works of Pucci-Serrin, Reichel and Ros-Ruiz-Sicbaldi we have Theorem [27,29,31]. Let f be a non-increasing Lipschitz function and Ω ⊂ R 2 a C 2,α connected domain whose complement is connected.…”
Section: Introductionmentioning
confidence: 99%
“…In the harmonic case f = 0 a complete classification of solutions to the problem (1.1) in the plane has been given in [29]. Moreover, the work [21], proves the BCN conjecture in dimension 2 if ∂Ω is connected and unbounded.…”
Section: Introduction and Statement Of The Main Resultsmentioning
confidence: 86%
“…Partial positive answers to the BCN conjecture in dimension 2 have been given in several works, see [10,13,20,21,31,33]. In [20] the authors show that the conjecture holds in dimension 2 under the hypothesis that ∂Ω is unbounded. The counterexample we give in this paper shows that such hypothesis is actually sharp.…”
Section: Introductionmentioning
confidence: 97%