但奇怪的是,在 Wald 书明确把这个概念叫做 tangent vector 的情况下,他在自己的书中定义 tangent vector 这个概念时却抛弃其前缀 tangent,直呼其为“矢量”(vector)。我们来对比一下这两本书的定义: Wald 书的定义: We define a tangent vector v at point p\in M to be a map v:\mathscr{F}\right...
After defining tangent vectors, we show how a smooth map between manifolds yields a linear map between tangent spaces, called the differential of the map, and a smooth curve determines a tangent vector at each point, called its velocity . In the final two sections we discuss and compare ...
Tangent plane :切平面 Tangent vector :切向量 Total differential :全微分 Trigonometric function :三角函数 Trigonometric integrals :三角积分 Trigonometric substitutions :三角代换法 Tripe integrals :三重积分 S Saddle point :鞍点 Scalar :纯量 Secant line :割线 Second derivative :二阶导数 Second Derivative ...
The unit tangent vector is the tangent vector with length one, given as {eq}\displaystyle \mathbf{T}(t)=\frac{1}{|\mathbf{r}'(t)|}\mathbf{r}'(t), {/eq} where {eq}\displaystyle |\mathbf{r}'| =\sqrt{(f'(t))^2+(g...
求翻译:trajectory is the tangent vector to the point [i.e., eq. (2.5)].是什么意思?待解决 悬赏分:1 - 离问题结束还有 trajectory is the tangent vector to the point [i.e., eq. (2.5)].问题补充:匿名 2013-05-23 12:21:38 轨迹点[即式的切向量。 (2.5)]。 匿名 2013-05-23 12...
Each Clarke tangent vector to a closed set in n at a point in the set is shown to be strictly tangent at that point to some Lipschitz continuous curve lying in the set. This result is quite different in nature from current descriptions of the Clarke tangent cone due to Clarke, Hiriart-...
connection point. digikey.be digikey.be 此外,这些连接器采用经过重新设计的触头、绝缘子材料,能在工作时处于切线位置,形成最优连接点。 digikey.cn digikey.cn Tourismisavectorofexchanges and a tool for the preservation of cultural diversity, especially in post-conflict areas ...
1. The tangent vector at each point of a Bézier curve is obtained by using de Casteljau algorithm. 利用de Casteljau算法求得正则Bézier曲线上各点处的切矢,由此得到x轴到Bézier曲线P(u)上各个点处的切向量的角θ(u),应用于求原始正则Bézier曲线的广义偏距曲线。
tangent point切点;切向点 tangent plane切面相切平面 tangent modulus切线模量,切线模数;正切模量;地基应力和变形切线模量 hyperbolic tangent双曲正切 arc tangentn. 反正切 loss tangent损耗因数;损耗角正切 tangent space切空间;切丛;切线空间 tangent vector正切向量,切矢量 ...
tangent point切点;切向点 tangent plane切面相切平面 tangent modulus切线模量,切线模数;正切模量;地基应力和变形切线模量 hyperbolic tangent双曲正切 arc tangentn. 反正切 loss tangent损耗因数;损耗角正切 tangent space切空间;切丛;切线空间 tangent vector正切向量,切矢量 ...