crossratio
EnglishEdit
Alternative formsEdit
NounEdit
crossratio (plural crossratios)
 (geometry) A special number associated with an ordered quadruple of collinear points, particularly points on a projective line, and preserved by the fractional linear transformations.
SynonymsEdit
TranslationsEdit
a special number associated with an ordered quadruple of collinear points, particularly points on a projective line, and preserved by the fractional linear transformations
