# Kronecker delta

- a function of two variables, i and j, which equals 1 when the variables have the same value, i = j, and equals 0 when the variables have different values, i ≠ j.

## Origin of Kronecker delta^{}

First recorded in 1925–30; named after L. Kronecker

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# Kronecker delta

- maths a function of two variables, i and j, that has a value of zero unless i = j, when it has a value of unitySymbol: δ ij

## Word Origin

named after Leopold Kronecker (1823–91), German mathematician

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