@Article{JPDE-24-195, author = {}, title = {On the Spectrum of a Class of Strongly Coupled p-Laplacian Systems}, journal = {Journal of Partial Differential Equations}, year = {2011}, volume = {24}, number = {3}, pages = {195--206}, abstract = {

Consider the nonlinear coupled elliptic system  -Δ_pu-λV(x)|u|^α|v|^βv=μ|u|^α|v|^βv, in Ω,  -Δ_qv-λV(x)|u|^α|v|^βu=μ|u|^α|v|^βu, in Ω,  u=v=0, in Ω,  where Δ_{ρ}ζ=∇⋅(|∇ζ|^{ρ-2}∇ζ),ρ > 1, Ω is a bounded domain and V(x) is a potential weight function. We prove that for any real parameter λ, there is at least a sequence of eigencurves (μ_k(λ))_k by using an energy variational method. We prove also via an homogeneity type condition that the eigenvector corresponding to the principal frequency μ_1(λ) is unique modulo scaling, bounded, regular and positive, without any condition on regularity of the domain. We end this work by giving a new proof technique to prove the simplicity of μ_1(λ) via a new version of Picones' identity.

}, issn = {2079-732X}, doi = {https://doi.org/10.4208/jpde.v24.n3.1}, url = {http://global-sci.org/intro/article_detail/jpde/5207.html} }