See also: collinéation

English edit

 
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Etymology edit

From Latin collineare to direct in a straight line. See collimation.

Noun edit

collineation (countable and uncountable, plural collineations)

  1. The act of collineating; collimation.
  2. (algebra) An isomorphism from one projective space to another, often to itself.
    Hyponym: central collineation