14-58 Gianni Arioli, Hans Koch
Some symmetric boundary value problems and non-symmetric solutions (408K, plain TeX, with eps figures) Jul 17, 14
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Abstract. We consider the equation Δu=wf ′(u) on a symmetric bounded domain in Rn with Dirichlet boundary conditions. Here w is a positive function or measure that is invariant under the (Euclidean) symmetries of the domain. We focus on solutions u that are positive and/or have a low Morse index. Our results are concerned with the existence of non-symmetric solutions and the non-existence of symmetric solutions. In particular, we construct a solution u for the disk in R2 that has index 2 and whose modulus |u| has only one reflection symmetry.

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