A deformation theorem in the noncompact nonsmooth setting and its applications.

Arioli, Gianni

Displaying similar documents to “A deformation theorem in the noncompact nonsmooth setting and its applications.”

Strongly indefinite functionals with perturbed symmetries and multiple solutions of nonsymmetric elliptic systems.

Clapp, Mónica, Ding, Yanheng, Hernández-Linares, Sergio (2004)

Electronic Journal of Differential Equations (EJDE) [electronic only]

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Multiple solutions for a singular semilinear elliptic problems with critical exponent and symmetries.

Cano, Alfredo, Hernández-Linares, Sergio, Hernández-Martínez, Eric (2010)

Electronic Journal of Differential Equations (EJDE) [electronic only]

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Existence of two nontrivial solutions for semilinear elliptic problems.

El Amrouss, Abdel R., Moradi, Fouzia, Moussaoui, Mimoun (2006)

Electronic Journal of Differential Equations (EJDE) [electronic only]

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On the existence of weak solutions for $p, q$ -Laplacian systems with weights.

Miyagaki, Olimpio H., Rodrigues, Rodrigo S. (2008)

Electronic Journal of Differential Equations (EJDE) [electronic only]

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Equivariant maps of joins of finite G-sets and an application to critical point theory

Danuta Rozpłoch-Nowakowska (1992)

Annales Polonici Mathematici

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A lower estimate is proved for the number of critical orbits and critical values of a G-invariant C¹ function $f : S^{n} \to ℝ$ , where G is a finite nontrivial group acting freely and orthogonally on $ℝ^{n + 1} 0$ . Neither Morse theory nor the minimax method is applied. The proofs are based on a general version of Borsuk’s Antipodal Theorem for equivariant maps of joins of G-sets.