# Cartan–Hadamard theorem

> On the structure of complete Riemannian manifolds of non-positive sectional curvature

**Wikidata**: [Q5047048](https://www.wikidata.org/wiki/Q5047048)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Cartan–Hadamard_theorem)  
**Source**: https://4ort.xyz/entity/cartan-hadamard-theorem


## References

1. Freebase Data Dumps. 2013