harmonic division

Fetched 2026-10-26 (cache).

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Noun

1. {{lb|en|mathematics|geometry}} The [[configuration]] of [[four]] [[ordered]] [[collinear]] [[point]]s such that their [[cross-ratio]] is -1.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.