On subelliptic equations on stratified Lie groups driven by singular nonlinearity and weak L 1 data

The article is about an elliptic problem defined on a stratified Lie group. Both sub and superlinear cases are considered whose solutions are guaranteed to exist in light of the interplay between the nonlinearities and the weak L 1 datum. The existence of infinitely many solutions is proved for suitable values of λ , p , q by using the Symmetric Mountain Pass Theorem.