Existence and multiplicity of solutions to a $p-q$ Laplacian system with a concave and singular nonlinearities

Debajyoti Choudhuri, Kamel Saoudi, Kratou Mouna

In this paper we study the existence of multiple nontrivial positive weak solutions to the following system of problems. \begin{align*} \begin{split} -Δ_{p}u-Δ_q u &= λf(x)|u|^{r-2…