Abstract projective space

Projective correlation

A correlation of a projective space is a Collineätion into the Dual projective space. geo

Further terminology

• A correlation which is an involution is a polarity.
• The image of a point under a polarity is called the polar (hyperplane) , while the image of a hyperplane is called the pole (point) .
• If then and are conjugate, if it is self-conjugate.

Examples

• Orthogonal complement polarity

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