1) direct sum of linear spaces
线性空间的直和
2) direct product of linear spaces
线性空间的直积
3) Space straight line peace noodles
空间直线和平面
4) direct sum of subspaces
子空间的直和
1.
Proof on direct sum of subspaces
关于子空间的直和的证明
5) Direct sum spaces
直和空间
1.
In this paper,we study the Friedrichs extension of the minimal operator of regular order differential operators in direct sum spaces by the basic theory of first-order systems of differential equation and their relationship to general n-th order quasi-differential expressions,and give the boundary conditions of Friedrichs extension.
应用一阶对称微分系统及相应的高阶微分方程的基本理论,讨论了正则型高阶微分算子的最小算子在直和空间上的Friedrichs扩张,给出Friedrichs扩张的边条件形式。
2.
In this paper we investigate the characterization of self-adjoint domains of symmetric differential operators with interior singular points in the direct sum spaces.
本文研究了具有内部奇异点的，即直和空间上的对称微分算子自共轭域的辛几何刻划问题。
6) space line
空间直线
1.
If there are two space lines,how to get a third one that makes a diffrent angle with them? how to get the line by computer? The line may be a bridge,a pipe the method we present could help you design the best of the
就空间直线间的连接问题提出一种解法，给出相应数学计算模型和程序框图，讨论了有关问题，为这类工程应用提供了一种方案设计的新思路。
2.
This paper introduces extraction of line equation and line locus equation, by making use of arbitrariness of known point in the space line.
介绍了如何利用空间直线 x -xOX =y -yoY =z-zoZ 上已知点MO(xO,yO,zO)的任意性来求直线方程和直线的轨迹方
补充资料：线性空间
线性空间
linear space
线性空间[如。rSI班ce;月H妞e益Hoe npoc，皿cT.0] 同向量空间(袱tor sPaCe).
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条