Two Nontrivial Solutions for a Nonhomogeneous Quasilinear Elliptic System With Sign‐Changing Weight Functions - Qi, Wanting; Zhang, Xingyong (Mathematical methods in the applied sciences, 2025)
Keywords: concave‐convex nonlinearities; Differential equations; Ekeland's variational principle; mountain pass theorem; nonhomogeneous quasilinear elliptic system; Nonlinear optics; Nonlinearity; Operators (mathematics); Weighting functions