1) Saddle-focus
鞍焦点
1.
Stability of homoclinic loops to saddle-focus with higher dimensions
高维鞍焦点同宿环的稳定性
2.
This paper studied the dynamical behavior of a 4-dimensional reversible system near a heteroclinic loop connecting a saddle-focus equilibrium and a saddle one.
讨论了四维反转系统中异宿环附近的动态性质,其中的异宿轨是连接鞍焦点和鞍点的证明在通有条件下,该异宿环附近存在可数无穷多条1-同宿轨,和可数无穷多个1-周期轨的单参数族,同时对这些周期轨和同宿轨作了直观描述。
3.
The stability of homoclinic cycles connecting a saddle in R3 was discussed in paper[1],but there has little paper concerning about the stability of homoclinic cycle to a saddle-focus.
文章在可定义回复映射的条件下,按照Wiggins在文献[2]中介绍的构造Poincaré映射的方法,给出了空间系统鞍焦点同宿环在其部分邻域中是渐近稳定或不稳定的判据。
2) Saddle-focus point
鞍-焦点
3) Saddle focus equilibrium point
鞍焦平衡点
4) saddle
[英]['sædl] [美]['sædḷ]
鞍点
1.
The center-weak focus of a general system of degree “n” was transformed into a problem of generalized center-weak saddle.
将一般n次中心—细焦点系统,转化为广义中心—细鞍点系统。
2.
A problem of center-weak focus system of degree n(n denotes odd numbers) in qualitative theory of differential equation is transformed into the problem of generalized center-weak saddle system by a generalized transformation of generalized polar coordinates,which offers the calculation formula of eleven-order weak saddle values.
采用广义极坐标变换,将微分方程定性理论中的齐n次(n为奇数)中心———细焦点系统,转化为广义中心———细鞍点系统,给出了该系统的第11阶细鞍点量计算公式。
3.
We discuss the types of the equilibrium points,Hopf bifurcation,saddle separate relation place.
讨论平衡点的类型，Ｈｏｐｆ分支问题，鞍点分界线的相对位置，极限环的存在性。
5) Saddle point
鞍点
1.
Incomplete Lagrange function and saddle point optimality criteria fora class of nondifferentiable generalized fractional programming;
一类非可微广义分式规划的非完全Lagrange函数与鞍点最优性准则
2.
Existence of the saddle points under the weak continuity;
弱连续条件下鞍点的存在性
3.
It will present consistency of saddle point with Nash equilibrium,and prove the corresponding theorems.
讨论了二人常和博弈中的占优策略、最优策略与稳妥策略的关系,比较最小最大原理和最大最小法分别选取的支付大小,通过例子说明稳妥策略组合不一定是纳什均衡;提出鞍点与纳什均衡的一致性,并证明了相应的定理。
6) saddle-point
鞍点
1.
During the definition of new saddle point,x0∈V is not needed,so the new saddle-point optimality condition is obtained in this paper.
2003年,Sach引进了一种新的鞍点,在新鞍点定义中,不需要x0∈V,为此,本文最后得到了新鞍点的最优性条件。
2.
The saddle-point type optimality criteria are also proven by using the existing necessary conditions under the assumption of the class of(F,α,ρ,d)-convexity.
对于一类目标函数中有无限个分式的广义分式规划,给出了两个不完全Lagrange函数,并利用已有的最优性必要条件,在(F,α,ρ,d)-凸性的条件下,证明了鞍点最优性准则。
3.
For a class of generalized fractional programming whose objective function is composed of infinite fractions,the saddle-point type optimality criteria are proven by using the existing necessary conditions,under the assumption of the class of B-(p,r)-invexity.
对于一类目标函数中有无限个分式的广义分式规划,给出一个不完全Lagrange函数,并利用已有的最优性必要条件,在B-(p,r)-不变凸性的条件下,证明了鞍点最优性准则。
补充资料：X线管的焦点
X线管的焦点
放射学术语。X线管内X线的发源点，即X线管阳极，接受电子撞击并产生X线的部位。X线管阳极的焦点并非为一个无限小的点，而是具有一定几何学的面积，故又称焦点面。由于X线管阳极靶面实际接受电子撞击的面积与其参与X线几何投影的有效面积不同，故焦点有实际焦点
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