关于常曲率空间的Projective Geometry的一个注记
A Remark on the Projective Geometry of Constant Curvature Spaces
摘要:
我们突出的$n$维欧氏空间,球面和双曲空间的投影几何之间的关系,通过这些空间的投影模型在$n+1$维Minkowski空间,使用交比的概念,这是适当的三个几何。
英文摘要:
We highlight the relation between the projective geometries of $n$-dimensional Euclidean, spherical and hyperbolic spaces through the projective models of these spaces in the $n+1$-dimensional Minkowski space, using a cross ratio notion which is proper to each of the three geometries.
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