Browsing by Author Calogero, Vetro
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We consider a Dirichlet problem driven by the anisotropic (p(z), q(z))-Laplacian, with a parametric reaction exhibiting the combined effects of singular and concave-convex nonlinearities. The superlinear term may change sign. Using variational tools together with truncation and comparison techniques, we prove a global (for the parameter λ>0
) existence and multiplicity theorem (a bifurcation-type theorem). |