Lie Sphere Geometry
In this chapter, we give Lie’s construction of the space of spheres and define the important notions of oriented contact and parabolic pencils of spheres. This leads ultimately to a bijective correspondence between the manifold of contact elements on the sphere S n and the manifold Λ2n−1 of projective lines on the Lie quadric.
KeywordsBijective Correspondence Lightlike Vector Proper Point Point Sphere Real Vector Space Versus
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