6533b852fe1ef96bd12aa453

RESEARCH PRODUCT

On the stability of the Serrin problem

Barbara BrandoliniCarlo NitschCristina TrombettiPaolo Salani

subject

Applied MathematicsMathematical analysisSymmetry in biologyDisjoint setsUnitary stateStability (probability)Domain (mathematical analysis)Overdetermined systemSettore MAT/05 - Analisi MatematicaOverdetermined problemOverdetermined problemsStabilityAnalysisMathematics

description

We investigate stability issues concerning the radial symmetry of solutions to Serrin's overdetermined problems. In particular, we show that, if $u$ is a solution to $\Delta u=n$ in a smooth domain $\Omega \subset \rn$, $u=0$ on $\partial\Omega$ and $|Du|$ is close to 1 on $\partial\Omega$, then $\Omega$ is close to the union of a certain number of disjoint unitary balls.

10.1016/j.jde.2008.06.010http://hdl.handle.net/10447/494034