Kronecker delta

In mathematics, the Kronecker delta or Kronecker's delta, named after Leopold Kronecker (1823-1891), is a function of two variables, usually integers, which is 1 if they are equal, and 0 otherwise. So, for example, delta_{12} = 0, but delta_{33} = 1. It is written as the symbol δij, and treated as a notational shorthand rather than as a function.

See also

• Levi-Civita symbol
• Dirac delta function
• Dirac measure

Kronecker Delta is also a German Lager brewed in the UK.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~