Global structure of positive solutions for nonlocal boundary value problems involving integral conditions

In this paper, we consider the nonlinear eigenvalue problems u″+λh(t)f(u)=0,00f(s)>0 for s>0s>0, and f0=f∞=0f0=f∞=0, f0=lims→0+f(s)/s,f∞=lims→+∞f(s)/s. We investigate the global structure of positive solutions by using global bifurcation techniques.