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

On the Singular Points at Infinity of Second Order Planar Systems

平面二次系统的无穷远奇点

Properties of Complex Harmonic Functions at Infinity

复调和函数及其在无穷远点的性质

A mode ⅲ crack problem in a transversely isotropic piezoelectric material subjected to uniform loads at infinity is studied based on exact boundary conditions.

基于精确的边界条件，针对远处受均布外载作用的横观各向同性压电材料，研究了其内的Ⅲ型裂纹问题。

The mode currents form a weighted orthogonal set over the conductor surface, and the mode fields form an orthogonal set over the sphere at infinity.

经典特征模理论提供了一套在导体表面形成加权正交系的特征电流，在无穷远球面上形成正交系的特征场。

Cross ratio and element at infinity are two important concepts with projective geometry and primary tools in considerate projective property of figures.

交比和无穷远元素是射影几何中的两个重要概念，它们是探讨图形射影性质的主要工具。

In the study, an infinite plate with elliptic notch is subject to remote stresses at infinity.

在分析中，设带椭圆孔口的无限平板受远处应力作用。

Second theorem shows that the existence of solution is possible under suitable conditions when the limit of growth of nonlinear term at infinity is an unbounded function.

第二个定理表明当非线性项在无穷远处增长的极限是一个无界函数时在适当条件下这问题仍可能有一个解。

Commuting Mapping Classes and Their Actions on the Circle at Infinity

可交换的映射类及其在无穷远边界上的作用

The uniqueness of the tangent cone at infinity on a complete noncompact Einstein manifold is always a very important problem.

非紧完备爱因斯坦流形上无穷远处切锥的唯一性一直是一个非常有意义的问题。

Some Behaviors of Asymptotically Linear Mappings at Infinity and the Limit of Indeterminate Form in Euclidean Space R n

渐近线性映射在无穷远处的某些性质和R~n空间中的未定型的极限

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

给出了微分系统无穷远点等时中心、拟等时中心的定义。

To construct a progression at infinity as an expansion of function in the continuous interval, a good result was achieved.

给出了一种不含导数的函数展开方法，在函数的连续区间内构造一个无穷级数作为函数的展开式。

The Limit of the Integrand of Convergent Abnormal Integral in the Infinite Range of Integration at Infinity

收敛无穷限反常积分被积函数在无穷远处的极限

Anti-de sitter space, although it is infinite, has a boundary, located out at infinity.

反德西特空间虽然无穷大，却有个位于无穷远的边界。

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

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。

Nonstandard characteristic of functions vanishing at infinity

无穷远点为零函数的非标准特征

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

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。

The Regular Embedded Ends and the Maximum Principle at Infinity

正则嵌入端与无穷远极大值原理

The conclusions for structure of critical point at infinity, global structure and more advanced ones, are obtained.

同时对该生化反应系统无穷远奇点的性态进行了分析，得到了全局结构的相图。

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

一类微分系统无穷远点的中心与拟等时中心