A sufficient and necessary condition of controllability for symmetric systems is al...
对于对称系统，给出了可控性的充要条件。
Finally, a sufficient and necessary condition of the diagonalizable block compound matrices is proved.
最后让明了块复合矩阵可对角化的一个充要条件。
A sufficient and necessary condition is given that the algebraic immunity of a Boolean function is not more than a fixed value.
借助覆盖向量刻画了代数免疫布尔函数的特征，给出布尔函数代数免疫不大于某确定值的充要条件。
A sufficient and necessary condition for a group of multiple-valued logical functions to form a permutation is presented in this paper.
本文给出了一组多值逻辑函数构成置换的一个充要条件。
Firstly, a sufficient and necessary condition for an uncertain discrete-time descriptor system to be robust quadratically stable is given.
首先，给出不确定离散广义系统鲁棒二次稳定的充要条件。
A sufficient and necessary condition for the existence of solution of is determined, followed by the representation of the general solution.
并给出了其有解的充要条件和通解的表达式。
This paper present a sufficient and necessary condition of constructing quintic PH curves and analyze the geometric meaning of the control polygon.
本文给出了构成五次PH曲线的充要条件，分析了其控制多边形的几何意义。
Besides, this paper gives a sufficient and necessary condition of the existence of normal process under the strictly nonnegative definiteness condition.
此外本文还给出了严格非负定条件下实正态过程存在的一个充要条件。
In the paper, we prove a graph which satisfies the Fan's condition is upper embeddable by a sufficient and necessary condition on non-upper embeddable graphs.
文章利用关于不是上可嵌入图的充要条件，证明了范条件图是上可嵌入的。
In this paper, we introduce the concept of the weak efficiency. Some of its properties are discussed and a sufficient and necessary condition of the weak efficiency is obtained.
本文引入生产技术的弱有效性概念，讨论了它的若干性质，得出一个弱有效性的充要条件。
A sufficient and necessary condition in terms of the compactness of super-distance space is given based on the property of super-distance space and the related theory of compactness.
利用超距空间的基本性质及拓扑空间紧致性的相关理论，给出超距空间为紧致空间的充分且必要条件，并讨论了一些相关性质。
Firstly, based on linear matrix inequalities (LMIs), a sufficient and necessary condition of circular regional controller possessing integrity for descriptor linear systems is given.
首先，用线性矩阵不等式(LMI)给出了线性广义系统圆盘区域的控制器存在的充分条件。
After a sufficient and necessary condition of phase interferometer unambiguous direction finding is proved, two methods of ambiguity resolution by combination of long baselines are presented.
在证明了多基线的相位干涉仪不产生测向模糊的充要条件后，讨论了两种用长基线组合解测向模糊的算法。
A sufficient and necessary condition is drawn so as to distinguish the special similarity from the generalized similarity. In addition, some qualities of the generalized similarity are discussed.
导出了从广义相似中区分出狭义相似的充要条件，讨论了广义相似的几个基本性质，指出了广义相似与狭义相似在性质上的诸多相似之处。
So it's a sufficient condition for an argument being valid that there is no possible situation where the premises are true and the conclusion false. And that's a necessary condition too.
所以这对于论点有效性是充分条件，没有可能前提为真，结论为假，这是必要条件。
Is attending class regularly and punctually a necessary or sufficient condition for being successful in class?
按时按点上课，对学好这门课而言，是必要条件还是充分条件？
Based on this, the sufficient and necessary condition under which a set of GD-Constrai NTS is a minimal cover is given.
在此基础上，给出了一个GD -约束集成为最小覆盖的充要条件。
The sufficient and necessary condition of controllability and reachability of a class of linear switching systems which has the same systematic matrix and different input matrixes is given.
给出一类线性切换系统能控性、能达性的充分必要条件，此类系统的特征是具有相同的系统矩阵和不同的输入矩阵。
Based on Darboux theory, this paper discussed the integrability of the Riemann Integral and provides a necessary and sufficient condition for integrability.
文章利用达布和理论，讨论了黎曼积分的可积性问题，给出了一个可积的充分必要条件。
In this section, we also establish a necessary and sufficient condition for the algorithm of the mixed scheduling.
在这一部分里，我们同样得到了一个任务集可以用混合调度算法调度的一个充分必要条件。
In this paper, we get the diameter of three kind of self-complementary and then give a necessary and sufficient condition from matrix adjacency when the diameter is 2 or 3.
本文给出了三种类型的自补图关于直径方面的结果，并从自补图的邻接矩阵给出了自补图直径为2或3的一个充要条件。
The question as to whether binarity is a necessary and sufficient condition to produce barium star is addressed.
讨论了双星是否是产生钡星的必要和充分条件，因为已知道的钡星系统全是双星。
In this short poper, the regularizability of descriptor decentralized systems is studied and a necessary and sufficient condition is given.
本文主要研究了广义分散控制系统的正则性，并给出了可以正则化的一个充要条件。
In this paper, We give a necessary and sufficient condition that closed decomposable operator, is strongly decomposable.
本文给出了封闭可分解算子是强可分解的一个充分必要条件。
Moreover, a judgement condition for live and bound WAC net system is given, and the sufficient and necessary condition for WAC net liveness monotonicity is shown.
同时，提出了活的有界的WAC网系统的判定条件，进而给出了WAC网活性满足单调性的充分必要条件。
It is obtained that a necessary and sufficient condition for a closed fuzzy set to be a convex fuzzy set.
引入线性拓扑空间中的凸闭模糊集概念，得到闭模糊集是凸模糊集的充分必要条件。
It is obtained that a necessary and sufficient condition for a closed fuzzy set to be a convex fuzzy set.
引入线性拓扑空间中的凸闭模糊集概念，得到闭模糊集是凸模糊集的充分必要条件。
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