projective space
Projective space is a mathematical concept that generalizes the properties of lines, planes, and higher-dimensional spaces. It is formed by taking a vector space and identifying equivalent points based on a certain equivalence relation. This allows for the consideration of parallel lines meeting at a point at infinity and other geometric phenomena that cannot be directly represented in Euclidean space. Projective space is used in various branches of mathematics, such as algebraic geometry and projective geometry, as well as in physics and computer graphics.
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