摘要

We prove the existence of three positive solutions for the Neumann problem associated to u(n) + a(t)u(gamma+1) = 0, assuming that a(t) has two positive humps and integral(T)(0) a(-)(t)dt is large enough. Actually, the result holds true for a more general class of superlinear nonlinearities.

  • 出版日期2011-5-1