# Weyl's postulate

> the postulate that the congruence of world lines of galaxies should be vorticity-free

**Wikidata**: [Q968399](https://www.wikidata.org/wiki/Q968399)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Weyl's_postulate)  
**Source**: https://4ort.xyz/entity/weyl-s-postulate