cross-ratio

Summary

cross-ratio ranks in the top 2% of general entities by monthly Wikipedia readership (158 views/month).^[1]

Key Facts

• cross-ratio's subclass of is recorded as ratio^[2].
• cross-ratio's Freebase ID is recorded as /m/023yz8^[3].
• cross-ratio's described by source is recorded as Brockhaus and Efron Encyclopedic Dictionary^[4].
• cross-ratio's described by source is recorded as Armenian Soviet Encyclopedia, vol. 5^[5].
• cross-ratio's Encyclopædia Britannica Online ID is recorded as topic/cross-ratio^[6].
• cross-ratio's defining formula is recorded as [a, b, c, d] = \frac{(a - b) (c - d)}{(a - d) (c - b)}^[7].
• cross-ratio's MathWorld ID is recorded as CrossRatio^[8].
• cross-ratio's nLab ID is recorded as cross ratio^[9].
• cross-ratio's maintained by WikiProject is recorded as WikiProject Mathematics^[10].
• cross-ratio's Microsoft Academic ID is recorded as 101586328^[11].
• cross-ratio's ProofWiki ID is recorded as Definition:Cross-Ratio/Complex_Analysis^[12].
• cross-ratio's in defining formula is recorded as [a, b, c, d]^[13].
• cross-ratio's in defining formula is recorded as a^[14].
• cross-ratio's in defining formula is recorded as b^[15].
• cross-ratio's in defining formula is recorded as c^[16].
• cross-ratio's in defining formula is recorded as d^[17].
• cross-ratio's OpenAlex ID is recorded as C101586328^[18].
• cross-ratio's Digital Library of Mathematical Functions ID is recorded as 1.9.E45^[19].
• cross-ratio's invariant under is recorded as homography^[20].

Why It Matters

cross-ratio ranks in the top 2% of general entities by monthly Wikipedia readership (158 views/month).^[1] cross-ratio has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.^[21] cross-ratio is known by 13 alternative names across languages and contexts.^[22]