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FilledSmallSquareKroneckerDelta[, , ... ] gives the Kronecker delta , equal to 1 if all the are equal, and 0 otherwise.

FilledSmallSquareKroneckerDelta[0] gives 1; KroneckerDelta[n] gives 0 for other numeric n.

FilledSmallSquareKroneckerDelta has attribute Orderless.

FilledSmallSquare See The Mathematica Book: Section 3.2.4.

FilledSmallSquare See also: DiscreteDelta, IdentityMatrix, Equal, UnitStep, If, Signature, DiracDelta.

Further Examples