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A Remark on the Projective Geometry of Constant Curvature Spaces (1209.3579v1)
Published 17 Sep 2012 in math.MG and math.GT
Abstract: 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.