Nonhomogeneous singular equations with an indefinite potential and a superlinear perturbation

We consider a Dirichlet problem driven by the (p,q)-Laplacian long with an indefinite potential term. In the reaction, we have the effects of a parametric singular term plus a superlinear Carathèodory perturbation. No Ambrosetti-Rabinowitz condition or any of its variants is used. Using variational tools together with truncation and comparison techniques, we prove a bifurcation-type result: an existence and multiplicity theorem that is global in the parameter $ \lambda>0 $.