projective geometry

Cross ratio and element at infinity are two important concepts with projective geometry and primary tools in considerate projective property of figures.

交比和无穷远元素是射影几何中的两个重要概念，它们是探讨图形射影性质的主要工具。

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Research into Effection Change Projection Plane Time about Three-Dimensional Projective Geometry

三维画法几何中有效换面次数的研究

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Projective geometry, as an independent course, could find application in drawing geometry to solve some problems. This kind of application is dealt with in this paper.

射影几何作是一门独立的学科，本文着重阐述射影几何与画法几何的关系，讨论射影几何在画法几何中应用问题。

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In this paper, some theories and methods of affine geometry and projective geometry are applied in elementary geometry, and an instructive role of higher geometry is played in the teaching of elementary geometry.

从仿射几何和射影几何的理论与方法出发，探讨了它们在初等几何中的一些应用，有利于高等几何对初等几何教学的指导作用。

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By using the projective geometry, some schemes for generating rational curves from pencil of lines are investigated in this paper.

采用射影几何学方法，研究从直线束生成有理曲线的技术方案。

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The synthetic geometers were developing projective geometry.

综合几何学家们在发展射影几何学.

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Connected graded algebra is the main object studied in noncommutative projective geometry.

连通分次代数是非交换射影几何主要研究的具体对象之一.

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American mathematician noted for his work on projective geometry and topology.

不为射影改变的性质的几何学.

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In this paper , the bar fixing problems of spatial four _ bar mechanism are discussed applying projective geometry.

应用画法几何探讨空间四杆机构各杆件的定位问题.

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In the calibration of the system, a plan based on the principle of cross ratio invariance in algebraic projective geometry was used to calibrate the coded light planes.

在对编码投影光平面的标定过程中，提出利用代数射影几何中的交比不变原理对其进行标定的方案，并论述了标定原理。

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We shall interrupt the history of projective geometry.

我们要把射影几何的历史断开.

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