Linked from

The 18 pages that link to Dirac delta function, each with the reason it gives.

• Probability density functionCompared with: It provides a formal point-mass analogue, not an ordinary probability density.

• Green's functionRelated: A Green's function is defined as the operator's response to this idealized source.

• Fourier analysisRelated: It describes idealized impulses and clarifies the transform of localized inputs.

• ConvolutionRelated: Convolving with it leaves a function unchanged.

• Paul DiracBroader topic: Dirac used this idealized impulse in quantum theory; rigorous treatments define it as a distribution.

• Impulse responseRelated: It models the input whose resulting output defines an impulse response.

• Heaviside step functionRelated: The step’s distributional derivative is a Dirac delta at its jump.

• Oliver HeavisideRelated: Impulse inputs connect Heaviside’s step-function methods with later distribution theory.

• Point (geometry)Related: It models point-concentrated quantities without being a geometric point.

• Point chargeRelated: It expresses a point charge's spatial charge density mathematically.

• Distribution theoryCompared with: Its use in quantum mechanics helped motivate a rigorous theory of generalized functions.

• Fermi's golden ruleRelated: The energy delta function enforces conservation between initial and final energies.

• Kronecker deltaCompared with: It performs a continuous-variable role analogous to the delta’s discrete index selection.

• Sign functionRelated: In distribution theory, the derivative of the sign function is twice a delta at zero.

• SourceRelated: An ideal point source is represented by concentrated divergence at its location.

• Wiener–Khinchin theoremRelated: Ideal white noise has a delta-shaped autocorrelation and a flat spectrum.

• Rectangular functionCompared with: It is the zero-width limiting idealization of a unit-area rectangular pulse.

• Delta potentialNarrower topic: The potential is defined by multiplying this distribution by a strength parameter.