U+2A3E "⨾" Z Notation Relational Composition Unicode Character

U+2A3E "⨾" Z Notation Relational Composition is a mathematical symbol used primarily in the Z formal specification language to denote the composition of two binary relations. Specifically, it represents the relational composition operator, where for relations R and S, the composition R ⨾ S yields a new relation containing all pairs (x, z) such that there exists an intermediary y with (x, y) in R and (y, z) in S. This symbol is visually distinguished from the similar-looking semicolon by its larger size and central dot, and it plays a critical role in formally describing system behaviors, data flow, and state transitions in software and hardware specifications.