Denominator (Built-in Mathematica Symbol)

Denominator[expr] gives the denominator of expr.

Depth (Built-in Mathematica Symbol)

Depth[expr] gives the maximum number of indices needed to specify any part of expr, plus 1.

DerivativeFilter (Built-in Mathematica Symbol)

DerivativeFilter[image, {n_1, n_2}] computes the n_i\[Null]^th derivative of image in the vertical and horizontal directions.DerivativeFilter[image, {n_1, n_2}, \[Sigma]] ...

DGaussianWavelet (Built-in Mathematica Symbol)

DGaussianWavelet[] represents a derivative of Gaussian wavelet of derivative order 2.DGaussianWavelet[n] represents a derivative of Gaussian wavelet of derivative order n.

DialogNotebook (Built-in Mathematica Symbol)

DialogNotebook[{cell_1, cell_2, ...}] represents a dialog notebook that can be manipulated by the Mathematica front end.

DirectedEdge (Built-in Mathematica Symbol)

DirectedEdge[u, v] or u \[DirectedEdge] v represents a directed edge from u to v.

DirichletL (Built-in Mathematica Symbol)

DirichletL[k, j, s] gives the Dirichlet L-function L(\[Chi], s) for the Dirichlet character \[Chi](n) with modulus k and index j.

DiscreteDelta (Built-in Mathematica Symbol)

DiscreteDelta[n_1, n_2, ...] gives the discrete delta function \[Delta] (n_1, n_2, ...), equal to 1 if all the n_i are zero, and 0 otherwise.

DownValues (Built-in Mathematica Symbol)

DownValues[f] gives a list of transformation rules corresponding to all downvalues defined for the symbol f.

EdgeRenderingFunction (Built-in Mathematica Symbol)

EdgeRenderingFunction is an option for GraphPlot and related functions that gives a function to generate the graphics primitives to use in rendering each edge.