Fountain theorem over cones and applications

In this paper, we establish fountain theorems over cones and apply it to the quasilinear elliptic problem equation(1){−Δpu=λ|u|q−2u+μ|u|γ−2u,x∈Ω,u=0,x∈∂Ω,to show that problem (1) possesses infinitely many solutions, where 1 < p < N, 1 < q < p   < γ, Ω⊂ℝNΩ⊂ℝN is a smooth bounded domain and λ, μ∈ℝμ∈ℝ.