Let Δk be the Dunkl Laplacian on Rd associated with a reflection group W and a multiplicity function k. The purpose of this paper is to establish the existence and the uniqueness of a positive solution on the unit ball B of Rd to the following boundary value problem: Δku = φ(u) in B and u = f on ∂B: We distinguish two cases of nonnegative perturbation φ: trivial and nontrivial.
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