the fixed point index theory 不动点指数理论
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
Nonlinear ordinary differential systems boundary value problems cone fixed point index theory positive solution.
常微分方程组 边值问题 锥 不动点指数理论 正解。
By using fixed point index theory in a cone, we study the existence of positive solutions of boundary value problems for systems of nonlinear second order singular differential equations.
使用锥上拓扑度理论，研究二阶非线性奇异微分方程组两点边值问题正解的存在性。
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。
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