ket
English edit
Pronunciation edit
Etymology 1 edit
From bra-ket notation invented by Paul Dirac, from bracket.
Noun edit
ket (plural kets)
- (physics) A column vector, in Hilbert space, especially as representing the state of a quantum mechanical system; the complex conjugate transpose of a bra (a row vector); a ket vector. Symbolised by |...〉.
- A particular ket, say , might be represented by a particular column vector. Its corresponding bra, , would then be represented by the row vector which is the transpose conjugate of that column vector.
Antonyms edit
Related terms edit
Translations edit
Etymology 2 edit
Compare Icelandic kjöt (“flesh”); akin to Swedish kött, Danish kød, and Norwegian kjøtt. The use of the term ket for "candy" or "sweets" probably derived from its use to describe sweet meats or as a deterrent to children.
Noun edit
ket (countable and uncountable, plural kets)
- (Northern England) Carrion; any filth.
- (Northumbria) Sweetmeats.
- (Wearside) A sweet, treat or candy.
References edit
- The Collaborative International Dictionary of English v.0.48 on DICT.org
- Northumberland Words, English Dialect Society, R. Oliver Heslop, 1893–4
- A Dictionary of North East Dialect, Bill Griffiths, 2005, Northumbria University Press, →ISBN
- A List of words and phrases in everyday use by the natives of Hetton-le-Hole in the County of Durham, F.M.T.Palgrave, English Dialect Society vol.74, 1896, [1]
Etymology 3 edit
Noun edit
ket (uncountable)
Descendants edit
- → Dutch: ket
Etymology 4 edit
Noun edit
ket (uncountable)
Breton edit
Pronunciation edit
Adverb edit
ket
Usage notes edit
Together with ne: ne ... ket. This is the same structure as French ne ... pas.
Dutch edit
Pronunciation edit
Audio (file)
Etymology 1 edit
From Old Dutch ked, kedde, kidde, meaning young goat. Compare English, Swedish and Danish kid, German Kitz and Kitze, Albanian kedh and kec.
Noun edit
ket m (plural ketten, diminutive ketje n)
Etymology 2 edit
Unadapted borrowing from English ket.
Noun edit
ket c (uncountable)
Icelandic edit
Alternative forms edit
- (common) kjöt
Etymology edit
See kjöt.
Pronunciation edit
Noun edit
ket n (genitive singular kets, no plural)
Declension edit
Ilocano edit
Conjunction edit
ket
Tocharian B edit
Alternative forms edit
Etymology edit
Genitive form of kᵤse (“who, which”).
Pronoun edit
ket
Further reading edit
- Adams, Douglas Q. (2013) “ket”, in A Dictionary of Tocharian B: Revised and Greatly Enlarged (Leiden Studies in Indo-European; 10), Amsterdam, New York: Rodopi, →ISBN, pages 203-204