| 3维射影空间中笛沙格定理的推广 |
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| 引用本文： | 侯忠义.3维射影空间中笛沙格定理的推广[J].首都师范大学学报(自然科学版),1994,15(2):28-30. |
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| 作者姓名： | 侯忠义 |
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| 作者单位： | 首都师范大学数学系 |
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| 摘 要： | 本文将笛沙格定理推广到３维射影空间，证明了空间两个四面体对应顶点的连线交于一点，则其对应侧面的交线共面．
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| 关 键 词： | 射影空间 对偶图形 笛沙格定理 |
The Generalization of Desargus Theorem for 3-Dimension Projective Space |
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| Hou Zhongyi.The Generalization of Desargus Theorem for 3-Dimension Projective Space[J].Journal of Capital Normal University(Natural Science Edition),1994,15(2):28-30. |
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| Authors: | Hou Zhongyi |
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| Abstract: | The paper gives the generalization of Desargus theorem for 3-dimension projective space and proves that if the lines joining corresponding venices of two tetrahedra are concurrent in a point,then the corresponding faces,if extended, will intersect in three coplanar straight lines. |
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| Keywords: | projective spaces dual graphs dual propositions Desargus theorem |
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