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Meaning of cross-ratio | Babel Free

Noun CEFR C1

Definitions

A special number associated with an ordered quadruple of collinear points, particularly points on a projective line, and preserved by the fractional linear transformations.

Equivalents

Suomi kaksoissuhde
Français birapport

CEFR level

C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
See all C1 English words →

See also

cross-reactivity cross-reading Cross-reference cross-resistance cross-rhythm Cross-road

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