1) mean geodesic curvature
平均测地曲率
2) mean curvature
平均曲率<测>
3) mean curvature
平均曲率
1.
Study on hypersurface with constant mean curvature in sphere;
球面上的常平均曲率超曲面
2.
The properties of a riemannian foliation with parallel mean curvature on a Riemannian manifold;
常曲率空间中具有相同常平均曲率的黎曼叶状结构的一些性质
3.
The classification of space-like surfaces with parallel mean curvature vector of an indefinite space form;
不定空间形式中具平行平均曲率向量的类空曲面(英文)
4) average curvature
平均曲率
1.
This paper proves that, within the general parameters of surface, by the Gauss equation and the average equation, the average curvature expressed as a constant is either plane or spherical surface, Also, it provides proofs of the basic forms (Types Ⅰ and Ⅱ) of the surface, and of the expression of Codazzi equation while the parameter curve of the surface represents the grid of the curvature line.
在曲面的一般参数下,利用 Gauss方程的表达式证明了平均曲率为常数的曲面或者是平面,或者是球面;同时证明了曲面的参数曲线取曲率线网时,曲面的第I、Ⅱ基本形式及Codazzi方程的表达式。
2.
In the terrain match algorithm, the terrain is divided into different areas according to the average curvature of the terrain.
在地形匹配算法中,依据地形平均曲率划定地形范围,地形平缓的地带采用两点匹配法,变化较为剧烈的地带采用三点匹配法。
3.
This paper mainly proves the function relationship between the Goss curvature and the average curvature of curved surface vs.
本文主要论证了曲面与其平行曲面的高斯曲率和平均曲率间的函数关系式,从而进一步讨论了曲面与其平行曲面间的相关性质。
5) mean Berwald curvature
平均Berwald曲率
1.
This paper studies two important classes of(α,β)-metrics in the form F=(α+β)m+1/αm and F= α +εβ+2β2/α-β4/(3α3) on an n-dimensional manifold and proves that these two kinds of(α,β)-metrics are of isotropic mean Berwald curvature if and only if they are of isotropic S-curvature,where α=aij(x)yiyj is a Riemannian metric and β=bi(x)yi is a 1-form and m is a real number with m≠1,0,-1/n.
研究了n-维流形上两类重要的(α,β)-度量——F=(α+β)m+1/αm和F=α+εβ+2β2/α-β4/(3α3),证明了这两类(α,β)-度量具有迷向S-曲率,当且仅当它们具有平均Berwald曲率,其中α=aij(x)yiyj是黎曼度量,β=bi(x)yi是非零1-形式,m为满足m≠-1,0,-1/n的非零实数。
2.
This paper studies two kinds of important geometric quantities the mean Berwald curvature and the mean Landsberg curvature for Randers metrics, describes these important curvatures and gives a sufficient and necessary condition for Randers metric satisfying E=0 or J=0 respectively.
研究了Randers度量的两类重要的几何量———平均Berwald曲率和平均Landsberg曲率,描述了这两类重要的曲率,且分别给出了Randers度量满足E=0或J=0的充分必要条
3.
Meanwhile, we show that the mean Berwald curvature S=0 implies that the Ricci curvature Ric is quadratic in projectively flat Finsler spaces.
同时还证明了,在射影平坦Finsler空间中,平均Berwald曲率S=0意味着Ricci曲率Ric是二次齐次的。
6) constant mean curvature
常平均曲率
1.
L~2 harmonic forms and stability of hypersurfaces with constant mean curvature;
L~2调和形式与具有常平均曲率的稳定超曲面
2.
Stable and Complete Submanifolds with Constant Mean Curvature and Finite L~p-Norm Curvature in Space Forms;
空间形式中具有常平均曲率及有限L~p范数曲率的稳定完备子流形
3.
Complete space-like hypersurfaces with constant mean curvature in locally symmetric Lorentz spaces
局部对称Lorentz空间中具有常平均曲率的完备类空超曲面
补充资料:平均曲率
平均曲率
mean cunafure
平均ee率[~e一臼此;epe刀田皿.印棚3.a],3维Euclid空间R’中曲面小2的 该曲面点A处主曲率(prmc币alcun瓜ture)k,与k:和之半: k,+k, H(A、二一_ 2对于EucUd空间R”+’中的超曲面。”,此公式可推广为: k,+…+k_ H‘A、二一 n其中k‘(j=l,…,n)是所给超曲面在点A任中”处的主曲率. R3中曲面的平均曲率可通过该曲面的第一和第二基本形式的系数表示: 1 LG一ZMF+NE H(A)二之二二二‘一二二七二一二二二全匕 2 EG一F乙其中E,F,G是在点A。中2处计算的第一基本形式(肠tfi功dsl拙ntal fbxm)的系数,L,M,N是该点处第二基本形式(second加次ha众浏园form)的系数.在所给曲面由方程Z=f(x,y)定义的特殊情形,平均曲率可用下述公式计算: H(A)= 卜十图’)典一2李李-业二、「1+国’}斗 L\oy/J ox一ox oy口x口yL\口x/J口y‘ 「1、r李、’十了鱿、’1’‘, L‘\刁x/’\a夕/」此公式推广到R”干’中由方程x。+、=f(x,,…,x。)定义的超曲面中”如下: H(A), 女rl+。2-位Z力2〕里本一争皿』五一望立- ‘习L一\口工‘/」dx了‘.界,口x‘dxz dx,dxz (l+p’)’12其中 ,2一}gtadf}2一r李、’+…、{共)’. ·扩一\似,/\叔。/ 几.A.C”江opoB撰【补注l对于n维E珑lid空间中余维数为”一功>1的m维子流形M,平均曲率推广为平均曲率法向量(n笼习n cun旧t切吧nont自1)概念: 、,一生”犷「TrA(。‘、1。. m]=!其中e:,·,e。一。是M在p处的法空间(见法空间(曲面的)(nom以lsP毗(to as切成‘e))的标准正交标架,A( ej):T,(M)~T,(M)(T,(M)为M在p处的切空间)是M在p处沿e,方向的形状算子(s恤pe oPemtor),它与M在p处的第二基本张量V由“
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参考词条