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The Lin-Ni’s problem for mean convex domains

About this Title

Olivier Druet, Ecole normale supérieure de Lyon, Département de Mathématiques - UMPA, 46 allée d’Italie, 69364 Lyon cedex 07, France, Frédéric Robert, Institut Élie Cartan, Université Henri Poincaré Nancy 1, B.P. 239, F-54506 Vandoeuvre-lès-Nancy Cedex, France and Juncheng Wei, Department of Mathematics, Chinese University of Hong Kong, Shatin, Hong Kong

Publication: Memoirs of the American Mathematical Society
Publication Year: 2012; Volume 218, Number 1027
ISBNs: 978-0-8218-6909-3 (print); 978-0-8218-9016-5 (online)
DOI: https://doi.org/10.1090/S0065-9266-2011-00646-5
Published electronically: November 30, 2011
Keywords: Neumann elliptic problem, critical exponent, blow-up
MSC: Primary 35J20, 35J60

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Table of Contents

Chapters

  • Introduction
  • 1. $L^\infty -$bounded solutions
  • 2. Smooth domains and extensions of solutions to elliptic equations
  • 3. Exhaustion of the concentration points
  • 4. A first upper-estimate
  • 5. A sharp upper-estimate
  • 6. Asymptotic estimates in $C^1\left (\Omega \right )$
  • 7. Convergence to singular harmonic functions
  • 8. Estimates of the interior blow-up rates
  • 9. Estimates of the boundary blow-up rates
  • 10. Proof of Theorems and
  • A. Construction and estimates on the Green’s function
  • B. Projection of the test functions

Abstract

We prove some refined asymptotic estimates for positive blow-up solutions to $\Delta u+\epsilon u=n(n-2)u^{\frac {n+2}{n-2}}$ on $\Omega$, $\partial _\nu u=0$ on $\partial \Omega$, $\Omega$ being a smooth bounded domain of $\mathbb {R}^n$, $n\geq 3$. In particular, we show that concentration can occur only on boundary points with nonpositive mean curvature when $n=3$ or $n\geq 7$. As a direct consequence, we prove the validity of the Lin-Ni’s conjecture in dimension $n=3$ and $n\geq 7$ for mean convex domains and with bounded energy. Recent examples by Wang-Wei-Yan show that the bound on the energy is a necessary condition.

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