1) necessary and sufficient boundary integral equation(NSBIE)
充分必要积分方程(NSBIE)
3) necessity/sufficiency number
充分/必要数
4) supple-mental integral equation
补充积分方程
1.
The boundary integral equations are presented and the corresponding supple-mental integral equations are also decived for thermal-plastoelastic problems in plane defor-mation, which can be regarded as a special kind of plane problems.
给出了一类特殊的平面问题—平面变形问题的热弹塑性边界积分方程，同时导出了相应的补充积分方程。
5) necessary and sufficient condition
充分必要条件
1.
By applying the topology theory,the necessary and sufficient condition for the existence and uniqueness of the equilibrium point of GHNN was obtained.
应用拓扑理论,得到了广义Hopfield神经网络平衡点的存在性和唯一性的充分必要条件;利用矩阵的性质,通过构造Lurie型Liapunov函数,得到了广义Hopfield神经网络绝对指数稳定的充分条件以及几类特殊神经网络绝对指数稳定的充分必要条件。
2.
The main results are: if A=(a_(ij))_(3×3), Reλ(A)<0, and c~Tb·trA~2-c~TA~2b≤0, the necessary and sufficient condition for absolute stability of the system is that c~Tb≤0, c~TA~(-1)b≥0; especially when A=(diag(-ρ_1, -ρ_1, -ρ_2),) the necessary and sufficient condition for absolute stability of the system is c~Tb≤0, (c~TA~(-1)b≥0.
利用popov频率法,讨论了三阶直接控制系统dXdt=AX+bf(σ),σ=cTX零解的绝对稳定性,获得了A在cTb·trA2-cTA2b≤0的条件下,其零解绝对稳定的充分必要条件为cTb≤0,cTA-1b≥0;特别是当A=diag(-ρ1,-ρ1,-ρ2)时,零解绝对稳定的充分必要条件为cTb≤0,cTA-1b≥0。
3.
A solvable necessary and sufficient condition: P(x)=bG(x)-G′(x)/G(x)-2F(x)Q(x)=F~2(x)-F′(x)-F(x)(bG(x)-G′(x)/G(x))+cG~2(x).
利用降阶法研究了变系数二阶线性微分方程y″+P(x)y′+Q(x)y=f(x)的可解性,得到了一个可解的充分必要条件:存在有限形式的可微函数F(x)、G(x),G(x)≠0及常数b和c使得P(x)=bG(x)-G′(x)/G(x)-2F(x),Q(x)=F2(x)-F′(x)-F(x)(bG(x)-G′(x)/G(x))+cG2(x)。
6) sufficient and necessary condition
充分必要条件
1.
A sufficient and necessary condition for a multiplicative convex function to be a multiplicative concave function;
积性凸函数且是积性凹函数的充分必要条件
2.
The Sufficient and Necessary Condition to Make a Chair Steady on Uneven Ground;
在不平地面上把椅子放稳的充分必要条件
3.
The paper addresses the existence problem of generalized inverses for elements of a Banach algebra under perturbations and derives a sufficient and necessary condition for the existence of generalized inverse.
用线性算子广义逆的稳定性问题的方法,得到Banach代数元扰动后广义逆存在的充分必要条件以及稳定的一个充分条件。
补充资料：必要充分统计量
必要充分统计量
necessary sufficient statistic
必要充分统计量[毗留，叮别伍cia兹由血血;.e06xo及”.M明八ocTaTO，Ha，cTaT”cT~』 见最小充分统计最(mi刊欧uls刊币eie以sta比tic).
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条