Maintains norms.
Implies determinant plus or minus 1. Converse not true.
- Matrix | 0, 161, 14
- Linear algebra | 0, 161, 15
- Algebra | 0, 2k, 65
- Mathematics | 17, 10k, 239
- Ciro Santilli's Homepage | 238, 147k, 2k
- Orthogonal group | 159, 181, 1
- Unitary matrix | 39