inversion pair

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|mathematics}} a pair of integers <math>(i,j)</math> is an inversion pair of some [[permutation]] <math>\sigma</math> if <math>i < j</math> but <math>\sigma(i)>\sigma(j)</math>.

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