Maintains norms.
Implies determinant plus or minus 1. Converse not true.
- Matrix | 0, 488, 18
- Linear algebra | 0, 526, 24
- Algebra | 0, 2k, 62
- Mathematics | 17, 13k, 336
- Ciro Santilli's Homepage | 262, 182k, 3k
- Orthogonal group | 159, 181, 1
- Unitary matrix | 39