Partial symmetry of least energy nodal solutions to some variational problems

Bartsch, Thomas;Weth, T;Willem, Michel
(2005) Journal d’Analyse Mathematique — Vol. 96, p. 1-18 (2005)

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Authors
  • Bartsch, ThomasUCLouvain
    Author
  • Weth, T
    Author
  • Willem, MichelUCLouvain
    Author
Abstract
We investigate the symmetry properties of several radially symmetric minimization problems. The minimizers which we obtain are nodal solutions of superlinear elliptic problems, or eigenfunctions of weighted asymmetric eigenvalue problems, or they lie on the first curve in the Fucik spectrum. In all instances, we prove that the minimizers are foliated Schwarz symmetric. We give examples showing that the minimizers are in general not radially symmetric. The basic tool which we use is polarization, a concept going back to Ahlfors. We develop this method of symmetrization for sign changing functions.
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Bartsch, T., Weth, T., & Willem, M. (2005). Partial symmetry of least energy nodal solutions to some variational problems. Journal d’Analyse Mathematique, 96, 1-18. https://doi.org/10.1007/BF02787822 (Original work published 2005)