In this paper, we prove that the family of osculating planes of a space curves is infinitesimally stationary at the points with zero torsion, and rotates infinitesimally around the tangent at the points with non-zero torsion.
本文证明了空间曲线的密切面族在挠率为零的点处无穷小稳定，在挠率非零的点处绕切线无穷小旋转。
In this paper, explicit and exact solitary wave solutions to the BBM type equation are obtained by the direct method, and the stability of solitary wave with a infinitesimal perturbation are investigated.
用直接方法获得了广义的BBM 型方程的显式精确孤波解,探讨了其孤波解在无穷小扰动下的稳定性,证明了BBM 型方程的孤波解在李亚普诺夫意义下是个稳定的。
The movement of the kinematic plane on a immobile plane means that the plane infinitesimally rotate round the instantaneous velocity pole.
运动平面Σ在一个静止平面Σ0上运动,可理解为绕其瞬时转动中心作无穷小的旋转,据此可得出抛物线、椭圆和双曲线沿直线滚动时,其上任一点的轨迹曲线的法线在运动的任何时刻都通过此刻相应的切点(瞬时转动中心)的结论。
A Note on The Theorem of Equivalent infinitesimal Replacement;
等价无穷小替换定理的一点注记
On the product of infinite infinitesimals;
关于无穷多个无穷小之积
On equivalent transformations of infinitesimals and their popularization;
关于无穷小的等价替换及其推广
infinitesimal area
无穷小邻域[面积]
Theorem 2 The product of a bounded function and an infinitesimal is an infinitesimal.
推论1常数与无穷小的乘积是无穷小。
Corollary 1 The product of a constant and an infinitesimal is an infinitesimal.
推论2有限个无穷小的乘积是无穷小。
Theorem 1 The sum of finite number of infinitesimal is an infinitesimal.
定理1有限个无穷小的和也是无穷小。
Notes On Infinity And Infintesimal;
关于无穷小与无穷大关系的一点注记
Some Sufficient Conditions about the Product of Countable Infinitesimal for Infinitesimal;
可列个无穷小乘积仍为无穷小的若干充分条件
The Thinking about the Product of Infinite Infinitesimals;
关于无穷多个无穷小的乘积的一些思考
Capable of having values approaching zero as a limit.
近零的，极小的无穷小地接近于零的
Infinitesimal Quantum gl_n and Associated Little q-Schur Algebras;
无穷小量子gl_n和相关的小q-Schur代数
An immeasurably or incalculably minute amount or quantity.
无穷小的数量非常小，几乎无法测量的数量
And roam it does, from the infinitesimal to the infinite, from the subatomic realm to the far reaches of the universe.
并且智慧遨游，从无穷小到无穷大，从亚原子王国到遥远的宇宙。
Newton says he has abandoned the infinitesimal or infinitely small quantity.
牛顿说他已放弃了微元或无穷小量。
Seeking Functional Limit by Equivalent Infinitesimal Replacement;
利用“等价无穷小的替换”求函数的极限
The Simple Way of Calculating Limit by Using Equivalence Infinit Small;
利用等价无穷小求解极限的简便方法
A Research of Equivalent Infinitesimal Substitution Method Applied to Limit Operation;
用"等价无穷小替代法"求极限的研究
Limit Calculation by the Equivalent Infinitesimal Replace Methods;
应用等价无穷小量的代换方法求极限
The application of infinitesimal institution in [1~∞]form limit
无穷小替换在求[1~∞]型极限中的应用
This paper gives the equivalent keplacement of infinitesimal algebraic sum, and also gives the theory and application of the equivalent infinitesimal replacement about indefinite forms such as1?∝,0?° ect.
给出无穷小代数和的等价代换，以及“1∞型“00”型未定式等价无穷小代换定理及应用。