AlgebraicIntegerQ[a] yields True if a is an algebraic integer, and yields False otherwise.
ArcTanh
(Built-in Mathematica Symbol) ArcTanh[z] gives the inverse hyperbolic tangent tanh -1 (z) of the complex number z.
BarnesG
(Built-in Mathematica Symbol) BarnesG[z] gives the Barnes G-function G(z).
BattleLemarieWavelet[] represents the Battle-Lemarié wavelet of order 3.BattleLemarieWavelet[n] represents the Battle-Lemarié wavelet of order n evaluated on equally spaced ...
CoifletWavelet[] represents a Coiflet wavelet of order 2.CoifletWavelet[n] represents a Coiflet wavelet of order n.
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.
Element
(Built-in Mathematica Symbol) Element[x, dom] or x \[Element] dom asserts that x is an element of the domain dom. Element[{x_1, x_2, ...}, dom] asserts that all the x_i are elements of dom. Element[patt, ...
EulerGamma is Euler's constant \[Gamma], with numerical value \[TildeEqual] 0.577216.
GridCreationSettings -> {opt_1 -> val_1, opt_2 -> val_2, ...} is a global option that specifies settings for the Create Table/Matrix dialog.
If
(Built-in Mathematica Symbol) If[condition, t, f] gives t if condition evaluates to True, and f if it evaluates to False. If[condition, t, f, u] gives u if condition evaluates to neither True nor False.