# De Rham invariant

> mod 2 invariant of (4k+1)-dimensional manifold

**Wikidata**: [Q5244714](https://www.wikidata.org/wiki/Q5244714)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/De_Rham_invariant)  
**Source**: https://4ort.xyz/entity/de-rham-invariant