Multiple radial solutions for a class of quasilinear elliptic problems

In this note, we revisit a class of pp-Laplacian boundary value problems. By means of the Leggett–Williams fixed-point theorem, we establish the existence of at least three positive radial solutions without the sublinear and superlinear growths imposed on the nonlinearity, which improves the main results in Ma (1996) [5], and Marcos do Ó and Ubilla (2003) [6].