Kronecker delta

Kro·neck·er delta  (krnk-r)

n.

A function of two variables that is equal to zero when the variables have different values and equal to one when the variables have the same value.

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[After Leopold Kronecker (1823-1891), German mathematician.]

Thesaurus

Noun

1.

Kronecker delta - a function of two variables i and j that equals 1 when i=j and equals 0 otherwise function, mapping, mathematical function, single-valued function, map - (mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function)