On Ricceri’s conjecture for a class of nonlinear eigenvalue problems

In this work we give a negative answer to a conjecture proposed by B. Ricceri in the reference [B. Ricceri, A remark on a class of nonlinear eigenvalue problems, Nonlinear Anal. 69 (2008) 2964–2967] for a class of nonlinear elliptic eigenvalue problems.