1) theorem of reciprocal deflection
逆挠定理
2) theory of reciprocal deflection
逆挠理论
3) direct and inverse theorems
正逆定理
1.
In this paper, we will use the 2r-th Ditzian-Totik modulus of smoothness to discuss the direct and inverse theorems of Lp metric approximation by Left-Bernstein-Durrmeyer quasi-interpolant operator Mn[2r-1](f), for functions which are defined in the space Lp[0,1] (1≤p≤+∞).
本文利用2r阶Ditzian-Totik光滑模ω_φ~(2r)(f,t)_p讨论了Left-Bernstein-Durrmeyer拟插值算子M_n~([2r-1])(g)对空间L_p[0,1](1≤p≤+∞)中函数在度量L_p下逼近的正逆定理。
4) inverse theorem
逆定理
1.
The inverse theorem of global approximation of derivatives of generalized Bernstein polynomials;
关于推广的Bernstein多项式同时逼近的逆定理
2.
Generalized Baskakov operators and the direct and inverse theorem of its derivatives;
广义Baskakov算子及导数的正逆定理
3.
Both direct and inverse theorems of pointwise approximation are derived.
证明了定义在 [0 ,∞ )上的具有 s阶连续有界导数的函数可以用修正的 Sza′sz算子线性组合的 s阶导数逼近 ,得到了点态逼近的正定理和逆定理 。
5) Noether's inverse theorem
Noether逆定理
6) converse theorem
逆定理
1.
This paper investigates the converse theorem of rectangular projection theorem in descriptive geometry,and furthermore supplements and confirms another converse theorem,"If the projection of two lines intersecting vertically fo rms a rectangle on a certain projecting plane,at least one line of the two lines is parallel to the projecting plane.
通过对《画法几何学》中直角投影定理的逆定理的研究,得出:“若垂直相交的两直线在某一投影面上投影成直角,则该两直线至少有一条直线平行于该投影面”的推论。
2.
The converse theorems of mean value theorem of two and three dimensional biharmonic function are presented and prove
提出并证明了二维和三维双调和函数中值定理的逆定
3.
The mean value theorems and converse theorems of bending and vibration of bars are presented and proven.
提出并证明了杆件弯曲和振动的中值定理和逆定理，对所得的结果进行了讨
补充资料：三垂线定理的逆定理
Image:11732716937617776.jpg
三垂线定理的逆定理
在平面内的一条直线，如果它和这个平面的一条斜线垂直，那么它也和这条斜线在平面内的射线垂直。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。