By constructing a special cone,using the fixed point index theory on cone and method of approximation,we get the existence of at least two positive solutions.
通过构造一个特殊的锥,采用近似逼近的方法,利用锥上的不动点指数理论,得到了至少两个正解。
参考来源 - 几类微分方程奇异边值问题正解的存在性·2,447,543篇论文数据，部分数据来源于NoteExpress
We show existence results for multiple sign-changing solution for third-order two- point boundary value problems by using the fixed point index and the topologic degree theory.
主要研究一类三阶两点边值问题变号解的存在性和多重性，利用不动点指数和拓扑度理论等得到了新的结论。
The main tool used was the theory of the fixed-point index.
所用的工具为不动点指数理论。
In this paper, we consider the existence of multiple positive solutions of discrete boundary value problem. The theory of fixed point index is used here to derive the existence theorem.
本文利用不动点指数理论得到离散边值问题多重正解的存在性。
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