# tetrad

> 4 pythagorean symbol (Kosmos) in the first four numbers symbolize the musica universalis and the Cosmos

**Wikidata**: [Q7706294](https://www.wikidata.org/wiki/Q7706294)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Tetrad_(Greek_philosophy))  
**Source**: https://4ort.xyz/entity/tetrad-q7706294