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Ket vs Kef - What's the difference?

ket | kef |

As nouns the difference between ket and kef

is that ket is a vector, in Hilbert space, especially as representing the state of a quantum mechanical system; the complex conjugate of a bra; a ket vector. Symbolised by |...〉 while kef is an alternative spelling of lang=en.

As a proper noun Ket

is a people of Krasnoyarsk Krai in Central Siberia, Russia.

ket

English

Etymology 1

From (term) notation invented by .

Noun

(en noun)
  • (physics) A vector, in Hilbert space, especially as representing the state of a quantum mechanical system; the complex conjugate of a bra; a ket vector. Symbolised by , ...? .
    • A particular ket , say , A\rangle, might be represented by a particular column vector. Its corresponding bra, \langle A, , would then be represented by the row vector which is the transpose conjugate of that column vector.

    Etymology 2

    Compare Icelandic . 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

    (en noun)
  • (Northern England) Carrion; any filth.
  • (Northumbria) Sweetmeats.
  • (Geordie) A sweet, treat or candy.

    • References

    * The Collaborative International Dictionary of English v.0.48 on DICT.org * * *

    Etymology 3

    Abbreviation.

    Noun

    (-)
  • (colloquial) ketamine
    • English terms with multiple etymologies ----

    kef

    English

    Noun

    (-)
    • ----