Abstract A homogeneous Dirichlet problem with ( p , q ) -Laplace differential operator and reaction given by a parametric p-convex term plus a q-concave one is investigated. A bifurcation-type… Click to show full abstract
Abstract A homogeneous Dirichlet problem with ( p , q ) -Laplace differential operator and reaction given by a parametric p-convex term plus a q-concave one is investigated. A bifurcation-type result, describing changes in the set of positive solutions as the parameter λ > 0 varies, is proven. Since for every admissible λ the problem has a smallest positive solution u ¯ λ , both monotonicity and continuity of the map λ ↦ u ¯ λ are studied.
               
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