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1)  periodic and antiperiodic boundary value problems
周期与反周期边值问题
2)  anti-periodic boundary value problems
反周期边值问题
1.
This paper concerns about the anti-periodic boundary value problems for a class of difference equations.
考虑一类差分方程反周期边值问题解的存在性,使用Schauder不动点定理和上下解方法,得到了若干解的存在性结果。
3)  anti-periodic boundary value problem
反周期边值问题
1.
In this paper,we employ the iterative method which is very concrete to obtain the existence,uniqueness and stability of integro-differential equations with impulses or impulses and delays for periodic boundary value problems,anti-periodic boundary value problems and two points boundary value problems.
本文利用迭代分析方法很具体地获得了某些脉冲积分微分方程和脉冲时滞积分微分方程(组)周期边值问题、反周期边值问题和两点边值问题解的存在性和唯一性,并且得到了其解一致稳定的充分条件。
4)  periodic boundary value problem
周期边值问题
1.
Method of upper and lower solutions in the reversed order of periodic boundary value problems for second order differential equations;
二阶微分方程周期边值问题的反序上下解方法
2.
Solvability of second order periodic boundary value problems in Banach spaces;
Banach空间二阶周期边值问题的可解性
3.
Monotone method for first order periodic boundary value problems of delay difference equations;
一阶时滞差分方程周期边值问题的单调迭代法
5)  periodic boundary value problems
周期边值问题
1.
The existence of positive solutions for a second-order ordinary differential periodic boundary value problems with derivative;
一类带导数项常微分周期边值问题正解的存在性
2.
Considering first-order periodic boundary value problems on time scales,the authors have obtained the sufficient conditions for the existence of extremal solutions by employing the approaches for upper and lower solutions and monotone iterative method.
考虑了时间模上一阶周期边值问题,运用上下解方法和单调迭代方法得出了此边值问题存在极值解的充分条件,所谓时间模T是实数集上一个非空子集,当时间模为R时,此结果为一个新结果。
3.
To find the sufficient conditions for the existence solutions of the periodic boundary value problems of ordinary differential equations, the so called upper and lower solution method together with monotone iterative technique was a very effective strategy.
将用于研究常微分方程周期边值问题地上下解方法与单调迭代技巧,拓展于研究泛函微分方程中一类一阶时滞微分方程周期边值问题,论证了此类方程周期边值问题地最大解和最小解的存在性,以及一致收敛于解地迭代逼近序列。
6)  periodic Riemann boundary value problem
周期Riemann边值问题
1.
A periodic Riemann boundary value problem generalized condition at ±∞i is posed and its solutions and solvable conditions are given.
在±∞i处提出一种条件推广的周期Riemann边值问题并给出解及可解条件 通过引入基本解组和广义相联周期边值问题的概念使这类边值问题的可解条件有明确的几何意义(正交化条件),而其特例推广了已有的工作
2.
We discuss the stability of the solve of periodic Riemann boundary value problem when the smooth perturbation of L occurs, and give the correspording error estimates.
讨论了当E为复平面上的有界单连通区域 ,且所有已知函数在E上满足H lder条件时 ,周期Riemann边值问题在边界曲线L E发生光滑摄动时解的稳定性问题 ,并给出了相应的误差估
3.
A periodic Riemann boundary value problem are discussed by the mapping , its basic of solutions are given, we render such problem with obviousgeometric interpretation (the orthorogorality condition).
本文用指数变换ζ=exp(i2z/a)重新求解了一类周期Riemann边值问题,得到了相应的基本解组,使得其可解条件的正交性显存于解和可解条件中。
补充资料:恒等周期
分子式:
CAS号:

性质:又称结构单元,重复结构单元,链节或恒等周期。聚合物中化学组成相同的最小单位称为重复单元。是构成高分子链并决定高分子以一定方式连接起来的原子组合高分子链中重复单元的重复次数称为聚合度。其结构式代表高分子链的结构。重复结构单元(即链节)与结构重复单元有时相同,有时则不同。如聚氯乙烯(CH2—CHCl)n,其重复结构单元与结构重复单元是相同的,都是—CH2CHCl—;而聚乙烯则不同,重复结构单元是—CH2—CH2—,结构重复单元是—CH2—。命名系统也不同,后者分别称聚氯乙烯和聚乙烯为聚(1-氯代乙烯)和聚亚甲基。

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