List of things named after Ernst Witt

These are things named after Ernst Witt, a German mathematician.

Bourbaki–Witt theorem
Hall–Witt identity
Hasse–Witt matrix
Hasse–Witt invariant
Poincaré–Birkhoff–Witt theorem, usually known as the PBW theorem
Shirshov–Witt theorem
Witt algebra
Witt decomposition
Witt design (Witt geometry)
Witt group
Witt index
Witt polynomial
Witt ring
Grothendieck-Witt ring
Witt scheme
Witt's theorem
Witt vector
Witt vector cohomology