L Wei, R Ma, Z Zhao - Mediterranean Journal of Mathematics, 2021 - Springer
Abstract Setting N={1, 2,…,∞}, N 0={0, 1, 2,…,∞}, we show the existence of positive
solutions of the quasilinear boundary value problem-∇(Δ u (x) 1+(Δ u (x)) 2)= g (x, u (x), Δ u …