Dictionary > English Dictionary > Definition, synonym and antonym of cross-ratio
Meaning of cross-ratio by Wiktionary Dictionary

cross-ratio


    Alternative forms

    • crossratio

    Noun

    cross-ratio ( plural: cross-ratios )

    1. ( 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 .

    Synonyms