# Feferman–Schütte ordinal

> large countable ordinal; the proof-theoretic ordinal of arithmetical transfinite recursion

**Wikidata**: [Q2264170](https://www.wikidata.org/wiki/Q2264170)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Feferman–Schütte_ordinal)  
**Source**: https://4ort.xyz/entity/feferman-sch-tte-ordinal


## References

1. Freebase Data Dumps. 2013