Positive constrained minimizers for supercritical problems in the ball

Details Positive constrained minimizers for supercritical problems in the ball Positive constrained minimizers for supercritical problems in the ball

2010-06-28

arxiv.org/abs/1006.5360v1

Mathematics

Analysis of PDEs

13 pages

Scientific paper

We provide a sufficient condition for the existence of a positive solution to $-\Delta u+V(|x|) u=u^p$ in $B_1$, when p is large enough. Here $B_1$ is the unit ball of $R^n$, n greater or equal to 2, and we deal both with Neumann and Dirichlet homogeneous boundary conditions. The solution turns to be a constrained minimum of the associated energy functional. As an application we show that, in case $V(|x|)$ is smooth, nonnegative and not identically zero, and p is sufficiently large, the Neumann problem always admits a solution.

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