Successive iteration and positive symmetric solution for a Sturm–Liouville-like four-point boundary value problem with a pp-Laplacian operator

In this paper, we consider the following Sturm–Liouville-like four-point pp-Laplacian boundary value problem with the nonlinear term ff depending on the first-order derivative (ϕp(u′(t)))′+q(t)f(t,u(t)u′(t))=00