Sheaf of Kähler differentials over a field Created 2026-10-06 Updated 2026-10-14
For a variety over , the module of Kähler differentials on each affine chart gives a quasi-coherent sheaf. Compatibility with localization glues these into . A finite presentation of an algebra gives a finite presentation of a module for its differentials, so this is a coherent sheaf on a variety.