- #1

- 931

- 56

- I
- Thread starter kent davidge
- Start date

- #1

- 931

- 56

- #2

fresh_42

Mentor

- 13,552

- 10,650

Unitary means we have a complex (real) vector space with a complex (sesquilinear / real: bilinear) inner product, which is also called a pre-Hilbert space or inner product space. If it is of finite dimension, then we the inner product defines an isometric isomorphism on ##\mathbb{C}^n## (resp. ##\mathbb{R}^n\;##) which is complete.