Orthogonal Involution

Orthogonal involution, also called absolute involution, is the involution on the line at infinity that maps orthogonal directions to each other.

See also

Involution, Line at Infinity

This entry contributed by Floor van Lamoen

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van Lamoen, Floor. "Orthogonal Involution." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/OrthogonalInvolution.html

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