Complement (Built-in Mathematica Symbol)

Complement[e_all, e_1, e_2, ...] gives the elements in e_all which are not in any of the e_i.

DirichletTransform (Built-in Mathematica Symbol)

DirichletTransform[expr, n, s] gives the Dirichlet transform of expr with respect to n.

ExpToTrig (Built-in Mathematica Symbol)

ExpToTrig[expr] converts exponentials in expr to trigonometric functions.

Gudermannian (Built-in Mathematica Symbol)

Gudermannian[z] gives the Gudermannian function gd(z).

HoldFirst (Built-in Mathematica Symbol)

HoldFirst is an attribute which specifies that the first argument to a function is to be maintained in an unevaluated form.

IncludeConstantBasis (Built-in Mathematica Symbol)

IncludeConstantBasis is an option for LinearModelFit and other fitting functions that specifies whether a constant term should be included if not explicitly given in the list ...

LyapunovSolve (Built-in Mathematica Symbol)

LyapunovSolve[a, c] finds a solution x of the matrix Lyapunov equation a.x + x.a\[ConjugateTranspose] == c.LyapunovSolve[a, b, c] solves a.x + x.b == c.LyapunovSolve[{a, d}, ...

MorletWavelet (Built-in Mathematica Symbol)

MorletWavelet[] represents a Morlet wavelet.

PauliMatrix (Built-in Mathematica Symbol)

PauliMatrix[k] gives the k\[Null]^th Pauli spin matrix \[Sigma]_k.

Share (Built-in Mathematica Symbol)

Share[expr] changes the way expr is stored internally, to try and minimize the amount of memory used. Share[] tries to minimize the memory used to store all expressions.