# Ordering Semantics

> The requirement that a defined semantics specify when one event is considered to happen before another.

Record: `lex:ordering-semantics`
Kind: constraint
Layer: [Causality Core](https://banes-lab.com/records/layer/causality-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-ordering-semantics

## category

- [Causality / Ordering / Distributed Time](https://banes-lab.com/records/lex-category/causality-ordering-distributed-time.md)

## referenced-by

- [Happens-Before Relationship](https://banes-lab.com/records/arch/happens-before-relationship.md)