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FilledSmallSquareDiracDelta[x] represents the Dirac delta function .

FilledSmallSquareDiracDelta[, , ... ] represents the multidimensional Dirac delta function .

FilledSmallSquareDiracDelta[x] returns 0 for all numeric x other than 0.

FilledSmallSquareDiracDelta can be used in integrals, integral transforms and differential equations.

FilledSmallSquare Some transformations are done automatically when DiracDelta appears in a product of terms.

FilledSmallSquareDiracDelta[, , ... ] returns 0 if any of the are numeric and not 0.

FilledSmallSquareDiracDelta has attribute Orderless.

FilledSmallSquare For exact numeric quantities, DiracDelta internally uses numerical approximations to establish its result. This process can be affected by the setting of the global variable $MaxExtraPrecision.

FilledSmallSquare See The Mathematica Book: Section 3.5.12.

FilledSmallSquare See also: UnitStep, If, PrincipalValue, Limit, KroneckerDelta.

Further Examples