bra-ket en · NOUN
Etymology
Concatenation of the terms bra and ket, which were introduced in 1939 and in turn derive from the splitting of the English word bracket.
Meanings
- The scalar product of two vectors (and optionally an operator), in Hilbert space, where the left (row) vector is a bra and the right (column) vector is a ket. Symbolised by ⟨...|...⟩ (bra and ket only) or ⟨...|...|...⟩ (bra, operator, ket).
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| bra-kets | Number=Plur | lexicographic |