# crystalline cohomology

> Weil cohomology theory for schemes over a base field, whose values are modules over the ring of Witt vectors over the base field, that replaces Zariski open sets by infinitesimal thickenings of Zariski open sets with divided power structures

**Wikidata**: [Q5191431](https://www.wikidata.org/wiki/Q5191431)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Crystalline_cohomology)  
**Source**: https://4ort.xyz/entity/crystalline-cohomology