# Function composition

This English edition is an AI candidate and does not yet have an OCME Atlas (GPT-6) Twin closure receipt.

[Catalogue presentation and source-binding data](https://ocme.evemisslab.com/data/i18n/catalogue.en.json)



## [Function composition](https://ocme.evemisslab.com/en/atlas/atlas-composition/)

The composition g∘f first evaluates f and then supplies its output to g; the intermediate value must be an allowed input of g.

atlas-composition · canonical_mko

[Function composition](https://ocme.evemisslab.com/en/mko/mko-composition/)

## Prerequisite nodes


- [Domain, codomain, and range](https://ocme.evemisslab.com/en/atlas/atlas-domain-codomain-range/)