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1)  generalized subaffine elastica
广义次仿射弹性曲线
1.
In this paper, we completely solve the generalized subaffine elastica in R3, the critical point of the total polynomial subaffine curvature functional, by using the Killing field and the classification of the conjugacy class of sl(3, R).
本文用Killing场和sl(3,R)的共轭类分类给出了R3中的广义次仿射弹性曲线,即全多项式次仿射曲率泛函的临界点,的完全
2)  Subaffine elastica
次仿射弹性曲线
3)  general affine nonlinear system
广义仿射非线性系统
1.
Any order approximate series solution of the state equation for general affine nonlinear systems
广义仿射非线性系统状态方程的任意阶近似级数解
2.
In order to analyze general affine nonlinear systems,according to the theory of Taylor series,the state equations are converted to a set of equations for state variation with infinite series expression using the Taylor expansion on control variations and state variations,while the control variations are included in the coefficient of state variations.
为了分析广义仿射非线性系统,对于广义仿射非线性系统状态方程,应用Taylor级数理论,将方程右端先后对控制量及状态量作Taylor展开,使之变为状态量的无穷级数形式,而控制量只出现在状态量各次项的系数中,方程的右端分为状态量的线性项和非线性高次项2部分。
4)  affine curve
仿射曲线
5)  curve of self-affine
自仿射曲线
6)  generalized Ball curve
广义Ball曲线
1.
G~2 Beta constraint of generalized Ball curves
组合广义Ball曲线的G~2Beta约束
2.
As a kind of generalized Ball curves, Wang Ball curves have shown greatly efficient effects on evaluating parametric curves, degree elevation and degree reduction.
Wang Ball曲线作为一种广义Ball曲线已经在参数曲线求值、升降阶计算中显示出极其有效的作用 。
3.
Enveloping theorems of B e zier and B-spline curves have been developed by su[4], In this paper,euveloping theorem of generalized Ball curve will be discussed .
Bzier曲线和B样条曲线的包络性质已在[4]中讨论过,本文研究广义Ball曲线的包络性质。
补充资料:仿射态射


仿射态射
afBne morphism

仿射态射!心ne m.,hism;a中扣.洲‘‘Mop加,M] 概形的态射f二X~S,使得S中每个开仿射子概形的原象也是一个仿射概形(affine scheme).概形X称为仿射s概形(affines一scheme)· 设s是一个概形,A是少s代数的拟凝聚层,矶是S内开仿射子概形,它们构成S的一个夜叠.那么把仿射概形Specr(U:,A)粘合起来就确定一个仿射S概形,记为Spec A.反之,可用仿射态射f:X~S定义的任何仿射S概形都同构于(作为S上概形)概形Specf.心.S概形f:Z~S到仿射S概形SpecA中S态射的集合与岁s代数层的同态A~f.几成一一对应. 概形的闭嵌人或仿射概形的任意态射都是仿射态射;仿射态射的其他例子是整态射以及有限态射.因而概形正规化的态射是仿射态射.仿射态射在复合及基变换下仍保持是仿射态射.【补注】‘一!方一,称为亨眼今射(finlte morph、“m),如果存在S的开仿射子概形的覆叠(S。),使得对所有的:,.厂‘(sa)是仿射的,并且f一’(sa)的环B。作为S。的环魂。土的模是有限生成的.态射是整的,如果氏在沌。上是整的,即每卜*6B。都在A。七是整的,这意指它足系数在注。中的泊一多项式的根或等价地,对每个一、任尽、,模‘4。卜]是有限生成一4。模.
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