运用分歧技巧,考虑二阶常微分方程周期边值问题 {u″+rf(u)=0, u(0)-u(2π)=u′(0)-u′(2π)=0 当参数r在一定范围内变化时结点解的存在性.
We are concerned with determining values of r,for which there exist nodal solutions of the periodic boundary value problem {u″+rf(u)=0, u(0)-u(2π)=u′(0)-u′(2π)=0 The proof of our main result is based upon global bifurcation techniques.