cross-ratio
cross-ratio · cross-ratios
A special number associated with an ordered quadruple of collinear points,…A special number associated with an ordered quadruple of collinear points, particularly points on a projective line, and preserved by the fractional linear transformations.
Meaning
1 sensesA special number associated with an ordered quadruple of collinear points, particularly points on a projective line, and preserved by the fractional linear transformations.
Translations
1 languagesOrigin
From cross- + ratio.From cross- + ratio.
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