Kronecker delta

English

Etymology

Named after German mathematician Leopold Kronecker (1823–1891)

Noun

Kronecker delta (plural Kronecker deltas)

  1. (mathematics) A binary function, written as δ with two subscripts, which evaluates to 1 when its arguments are equal, and 0 otherwise
  2. (mathematics) A unary function, written as δ with a subscript, which evaluates to 1 at zero, and 0 elsewhere.
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