The existence of countably many positive solutions for nonlinear singular mm-point boundary value problems on the half-line

In this paper, by introducing a new operator, improving and generating a pp-Laplace operator for some p>1p>1, we study the existence of countably many positive solutions for nonlinear boundary value problems on the half-line (φ(u′))′+a(t)f(u(t))=0,0