Two Models of Projective Geometry

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In the first model of 2D elliptic geometry, "points" and "lines" are the lines and planes through the origin in 3D, respectively. These axioms are satisfied: two "points" determine a "line" (because the two ordinary lines determine an ordinary plane), a...

Contributed by: George Beck

Видео Two Models of Projective Geometry канала Wolfram Demonstrations Project