# Dirac delta function

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## Dirac delta function

[di′rak ′del·tə ‚fəŋk·shən]
(mathematics)
References in periodicals archive ?
B]) is the Dirac delta function (two-dimensional for the present problem), [mu] is the viscosity, and the superscript T represents the transpose of the velocity gradient [nabla]u.
Dirac delta function [delta](x - L) was introduced to describe a distribution of externally applied torque.
The integral [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is intermediate quadratic approximation of the integral [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is the Dirac delta function, (Butkovskij, 1982).
Namias V: Singularities in the fields of electric and magnetic multipoles and related singularities involving the Dirac delta function.
Students should have background in complex analysis, the Fourier transform, the Dirac delta function, one-dimensional wave equations, linear algebra, random processes, and some physics.
0] is the intensity of the laser beam and [delta](t) is the Dirac delta function [10].
m] x [eta](t) is a continuous zero-mean stationary white-noise process with covariance matrix E{[eta](t)[eta](t + [tau])} = Q[delta]([tau]), where Q is the corresponding process disturbance intensity and [delta](x) is the Dirac delta function.
We present solutions of Burgers equation subject to an instantaneous point input, which is a Dirac delta function to represent the instant negative pressure (suction) applied to the soil around the sampler.
i], H(t), and [delta](x) are the components of the point force source, Heaviside step function, and Dirac delta function, respectively.
Scientists have use the Dirac delta function potential in three dimensions to approximate particle interactons.
where f is the packing factor and its value is [Pi]/6, while [Delta] is the Dirac delta function of the conductances (2).
He explains vector spaces and bases, linear transformations and operators, eigenvalues, circles and ellipses, inner products, adjoints, Hermitian operators, unitary operators, the wave equation, continuous spectre and the Dirac delta function, Fourier transforms, Green's and functions, and includes an appendix on matrix operations (new to this edition) and a full chapter on crucial applications.

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