Existence of radial solutions for a weighted p-biharmonic problem with navier boundary condition on the Heisenberg group

The existence of at least one positive radial solution of the p-biharmonic problem Δ H n ( w ( ξ ) | Δ H n u | p − 2 Δ H n u ) + R ( ξ ) w ( ξ ) | u | p − 2 u = ∑ i = 1 m a i ( | ξ | H n ) | u | q i − 2 u − ∑ j = 1 k b j (