# Mermin–Wagner theorem

> theorem about the impossibility of spontaneous symmetry breaking in two-dimensional systems at finite temperature

**Wikidata**: [Q1547975](https://www.wikidata.org/wiki/Q1547975)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Mermin–Wagner_theorem)  
**Source**: https://4ort.xyz/entity/mermin-wagner-theorem


## References

1. Freebase Data Dumps. 2013