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- Baaed 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. 摘要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。
- By using the continuation theorem of topology degree theory and properties of nonsingular M-matrix, we obtain sufficient conditions for the existence of positive periodic solutions of this system. 利用拓扑度理论中的连续定理以及M-矩阵的性质获得了该系统正周期解存在的充分条件。
- By using a fixed point theorem in cones, sufficient conditions are obtained for the existence of multiple positive periodic solutions for a class of difference equations with state-dependent delays. 本文利用锥不动点定理,得到一类具时滞状态依赖差分方程多周期解的存在性的充分条件,且我们的结果推广和改进了原有的结果。
- Chapter two establishes easily verifiable sufficient criteria for the existence of positive periodic solutions of the generalized ecological competition system with impulse and infinite delay. 第二章证明本文的主要结果，建立所研究系统存在正周期的充分性判据；
- By Hurwitz criterion, we prove the existence and local stabilities of the positive periodic solution. 利用Hurwitz判据得到了地方病平衡点的存在性及局部稳定性。
- 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. 摘要应用不动点定理，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。
- Sufficient conditions are obtained for the global existence of a positive periodic solution of periodic neutral delay predator-prey system by using the method of coincidence degree theory. 利用重合度理论建立了一类周期中立型时滞捕食者-食饵系统正周期解的全局存在性的充分条件.
- Existence of Positive Periodic Solutions of a Genotype Selection Model 基因选择模型正周期解的存在性
- Existence of Positive Periodic Solutions to Competitive Model with Time Delays 一类时滞种群竞争模型正周期解的存在性
- Existence of positive periodic solutions in periodic model of hematopoisis 周期造血模型的正周期解的存在性
- A Positive Periodic Solution of a Food Chain System 一类食物链条系统的正周期解
- Positive Periodic Solutions for a Class of P-Laplacian Boundary Value Problems 一类P-Laplacian边值问题的正周期解
- almost positive periodic solution 概周期正解
- Global positive periodic solution 全局周期正解
- A Counterexample on the Existence of Positive Periodic Solutions for Two-Species Predator-Prey Diffusive Systems 关于捕食者-食饵系统正周期解存在性的一个反例
- The Problem of Existence of Positive Periodic Solutions to a Neutral Model of Singal-species Population Growth 中立型单种群模型周期正解存在性问题
- EXISTENCE OF POSITIVE PERIODIC SOLUTIONS FOR NEUTRAL DELAY LOGARITHMIC POPULATION MODEL 中立型对数种群模型的正周期解存在性
- The mathematicians turned to culling periodic solutions. 数学家们转而去挑选周期解。
- EXISTENCE OF POSITIVE PERIODIC SOLUTIONS FOR NEUTRAL FUNCTIONAL DIFFERENTIAL EQUATIONS WITH DEVIATING ARGUMENTS 具偏差变元的中立型微分方程正周期解的存在性
- EXISTENCE OF POSITIVE PERIODIC SOLUTIONS TO A NONAUTONOMOUS DELAY DIFFERENTIAL EQUATION WITH IMPULSES 一类非自治时滞脉冲微分方程正周期解的存在性
