In mathematics, crystalline cohomology is a Weil cohomology theory for schemes X {\displaystyle X} over a base field k {\displaystyle k} . Its values H n ( X / W ) {\displaystyle H^{n}(X/W)} are modules over the ring W {\displaystyle W} of Witt vectors over k {\displaystyle k} .
In mathematics, crystalline cohomology is a Weil cohomology theory for schemes X {\displaystyle X} over a base field k {\displaystyle k} . Its values H n ( X / W ) {\displaystyle H^{n}(X/W)} are modules over the ring W {\displaystyle W} of Witt vectors over k {\displaystyle k} .
Source: Wikipedia "Crystalline cohomology" · CC BY-SA 4.0
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