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.
Flat
(Built-in Mathematica Symbol) Flat is an attribute that can be assigned to a symbol f to indicate that all expressions involving nested functions f should be flattened out. This property is accounted for ...
FromDigits[list] constructs an integer from the list of its decimal digits. FromDigits[list, b] takes the digits to be given in base b. FromDigits["string"] constructs an ...
GraphStyle is an option to Graph and related objects that specifies styles to use for the different graph elements.
HankelH1[n, z] gives the Hankel function of the first kind H_n^(1)(z).
HermitianMatrixQ[m] tests whether m is a Hermitian matrix.
KelvinBei[z] gives the Kelvin function bei(z).KelvinBei[n, z] gives the Kelvin function bei_n (z).
KelvinBer[z] gives the Kelvin function ber(z).KelvinBer[n, z] gives the Kelvin function ber_n (z).
KelvinKei[z] gives the Kelvin function kei(z).KelvinKei[n, z] gives the Kelvin function kei_n (z).
KelvinKer[z] gives the Kelvin function ker(z).KelvinKer[n, z] gives the Kelvin function ker_n (z).