Multiplicity of positive solutions for a nonlinear differential equation with nonlinear boundary conditions
D. R. Dunninger, Haiyan Wang (1998)
Annales Polonici Mathematici
Similarity:
We study the existence and multiplicity of positive solutions of the nonlinear equation u''(x) + λh(x)f(u(x)) = 0 subject to nonlinear boundary conditions. The method of upper and lower solutions and degree theory arguments are used.