无穷远点

目的：探讨一种可以把头皮脑电活动（EEG）记录中的参考电极位置近似地转化到无穷远点的新技术。

Objective : To explore a new techique to approximately standardize the reference electrode of scalp EEG recordings to a point at infinity .

其中无穷远点参考是通过一种基于等效分布源理论建立的参考电极校正技术处理后得到的。

The result with the reference of a point at infinity was derived from a newly proposed reference electrode standardization technique ( REST ) based on the equivalent distributed source theory .

在射影空间Pn中不存在度量概念，不能像欧氏空间En那样用度量概念来定义对称变换.借助于射影空间Pn中的无穷远点、调和分割和射影交换，给出了。

There exists no metric conception in projective space Pn . Therefore , symmetric transformation can not be defined by metric conception in Euclidean space En .

规范势的奇异点出现在半子的位置和无穷远点。奇异的左定Sturm－Liouville问题的谱函数与Weyl函数

Of the singular points (?) Spectral Function and Weyl-Function of Singular Left-Definite Sturm-Liouville Problems

证明当且仅当其稳定函数在无穷远点处的模小于1时，变步长Runge-Kutta方法渐近稳定。

It is shown that the Runge-Kutta methods are asymptotically stable if and only if the modulus of the stability function at infinity is less than 1 .

仿射参数的原点和无穷远点均对应于谱参数的无穷远，这两点处的Jost解作为边界，必应都在反散射变换中起作用。

The origin and the infinite point on the plane of the affine parameter correspond to the infinite points of the two Reimann sheets .

本文研究一类形式相当一般的平面多项式系统赤道环量（Gauss球面的无穷远点奇点量）的计算，建立了系统赤道环量计算的简明的线性代数递推公式。

In this paper , we study the computation of quantities of equator ( singular point quantities of infinity at Gauss sphere ) in a class of planar polynomial differential system with a general form . Two linear recursion formulas for computation of quantities of equator are obtained .

一类随机环境中可跳无穷远点的随机游动

A Class of Random Walks with Unbounded Jumps in Random Environments

孤立高次奇点与无穷远点的定性分析

A Qualitative Analysis of Higher Order Isolated Singular Point and Infinite Point

关于微分方程无穷远点初值问题解的唯一性

On the Uniqueness of Infinite Distant Point Initial Value Problem of Differential Equations

一类微分系统无穷远点的中心与拟等时中心

The Centers and Quasi-isochronous Centers at Infinity for a Class of Differential Systems

微分方程无穷远点初值问题的逼近

The Approach of the Initial Values of Infinite Distant Point of Differential Equation

关于无穷远点处的残数计算公式

On the residue computing formula for functions at infinity

有理函数在无穷远点的留数求法及其应用

The Method for Calculating Residue of Rational Function at Infinite Pint and Its Application

函数在无穷远点（∞）的性态

The Properties of a Function in Infinite Point

同时，还给出了双调和算子的基本解在无穷远点和零点处的渐进展开式。

The asymptotic representation of the fundamental solutions for the biharmonic operators is given .

无穷远点为零函数的非标准特征

Nonstandard characteristic of functions vanishing at infinity

复调和函数及其在无穷远点的性质

Properties of Complex Harmonic Functions at Infinity

一类多项式微分系统无穷远点的中心-焦点判定

The determination of center - focus at the infinity for a class of polynomial differential system

用初等几何方法给出线性函数在无穷远点的保角性证明。

The use of elementary geometry method can give conformal demonstration of lineal function in infinite eigenvector .

给出了微分系统无穷远点等时中心、拟等时中心的定义。

The definitions of the isochronous center and the quasi - isochronous center at infinity for differential systems are introduced .

研究了一类三次系统无穷远点的极限环分支问题。

The bifurcation of limit cycles at infinity for a class of cubic polynomial systems was studied in the paper .

本文研究了一类七次系统无穷远点的中心-焦点判定问题。

In this paper , the determination of center-focus at the infinity for a class of seven degree differential system was studied .

而这仅与边界值有关，对于无穷远点，其实意思也差不多，但多出一个变元的话。

And , all this business about boundaries and infinity is exactly the same stuff , but with more than one variable .

运用一种间接的方法研究了一类七次系统在无穷远点的中心条件和极限环分支问题。

An indirect method is used to study bifurcations of limit cycles at infinity for a class of seventh-order polynomial differential system .

文章通过变换，得出关于孤立高次奇点及无穷远点指数分解结论。

Through transforming , some conclusions are given about decomposing index number at higher order isolated singular point and infinite point in this paper .

分析了系统轨线的全局结构，指出了系统在无穷远点处的轨线存在奇异方向；解释了极限环消失的原因。

The global structure of the trajectories of the system is analysed and the disappearance of the limit cycle at tile infinity point is explained .

在第三章至第六章，我们研究实平面奇数次多项式微分系统无穷远点（赤道）的中心焦点判定与赤道极限环分支。

From Chapter 3 to Chapter 6 , the center-focus determination and bifurcation of the equator are studied for real planar odd polynomial differential systems .

通过参数的微小扰动，首次给出了一个在无穷远点有9个极限环的五次多项式系统的实例。

A quintic polynomial system , which bifurcates 9 limit cycles from the equator , was obtained at the first time by small perturbation of parameters .

研究一类五次系统无穷远点的中心、拟等时中心条件与极限环分支问题。

In this article , the center conditions , isochronous center conditions and bifurcation of limit cycles at infinity for a class of fifth system are investigated .