# Grünbaum–Rigby configuration

> The first 4-configuration to appear in the mathematical literature

**Wikidata**: [Q63993355](https://www.wikidata.org/wiki/Q63993355)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Grünbaum–Rigby_configuration)  
**Source**: https://4ort.xyz/entity/gr-nbaum-rigby-configuration