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Wikipedia definition
1. Projective spaceIn mathematics a projective space is a set of elements similar to the set P(V) of lines through the origin of a vector space V. The cases when V=R or V=R are the projective line and the projective plane, respectively. The idea of a projective space relates to perspective, more precisely to the way an eye or a camera projects a 3D scene to a 2D image. All points which lie on a projection line (i.e.
Read “Projective space” on English Wikipedia
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