Kronecker delta

noun Mathematics.

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

British Dictionary definitions for kronecker delta

Kronecker delta
/ (ˈkrɒnɪkə) /

noun

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

Word Origin for Kronecker delta

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