By applying a fixed point theorem, the authors study the existence of positive periodic solutions to a class of differential equations with stated-dependent delay.
运用不动点定理，研究一类具状态依赖时滞的微分方程周期正解的存在性。
By using a well-known fixed point index theorem, we obtain the existence, multiplicity and nonexistence of positive periodic solution(s) to this equation.
利用一个著名的不动点指标定理，获得了该方程周期正解的存在性、多重性和不存在性。
By using the fixed point theorem on cone, this paper studies the existence of positive solutions for first order periodic boundary value problem with impulses.
利用锥上的不动点定理讨论了一阶脉冲微分方程周期边值问题的正解的存在性。
In this paper, we study the existence of positive solutions to second - order nonlinear ordinary differential equations by using fixed point theorem in cones and Green's function.
本文主要运用锥不动点定理和格林函数研究二阶非线性常微分方程组正解的存在性。
This paper presents a new existence theory for positive solutions to a kind of second-order discrete periodic boundary value problems by employing a fixed point theorem in cones.
运用锥不动点定理，给出了二阶离散周期边值问题正解的新的存在性定理。
Using cone fixed point theorem we get the existence of one and two positive solutions.
利用锥上的不动点定理得到了一个正解和两个正解的存在性。
An existence theorem of twin positive solutions is established for a nonlinear fourth-order two-point boundary value problem.
对于非线性四阶两点边值问题建立了一个孪生正解的存在定理。
By using a fixed point theorem in cones, we investigate a second-order equation and the theorem of existence of unique positive periodic solution is given.
应用不动点定理，研究了一类二阶时滞微分方程，给出了其唯一周期正解的存在性定理。
This paper discusses the existence of multiple positive solutions of a class of nonlinear singular boundary value problems by means of the fixed point index Theorem on cones.
利用锥映射的不动点指数定理，研究了一类非线性奇异边值问题多个正解的存在性问题。
By using fixed point theorem in cone, the authors discuss the existence of positive solutions of fourth order two-point ordinary differential equations.
应用锥上不动点定理讨论一类四阶两点边值问题正解存在性。
By using fixed point theorem in cone, the authors discuss the existence of positive solutions of fourth outer two-point ordinary differential equations.
应用锥上不动点定理讨论一类四阶两点边值问题正解存在性。
Based on the fixed point theorem of two-point extension type, sufficient conditions are derived for the existence of positive periodic solutions of delay difference equations.
利用两点拉伸型不动点定理给出一阶时滞差分方程周期解存在性的充分条件。
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。
An existence theorem of positive solution is established for a superlinear second-order three-point boundary value problem. Here, the nonlinear term is bounded below and need not be nonnegative.
建立了超线性二阶三个边值问题的一个正解存在定理。这里，非线性项是下有界的并且不需要是非负的。
By using the fixed-point theorem of cone expansion-compression type with norm, we study the existence of positive pseudo-symmetric solutions to a four-point boundary value problem.
利用范数形式的锥拉伸与压缩不动点定理，研究了一类四点边值问题拟对称正解的存在性。
By using the fixed-point theorem of cone expansion-compression type with norm, we study the existence of positive pseudo-symmetric solutions to a four-point boundary value problem.
利用范数形式的锥拉伸与压缩不动点定理，研究了一类四点边值问题拟对称正解的存在性。
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