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.

Implies (Built-in Mathematica Symbol)

Implies[p, q] represents the logical implication p \[DoubleRightArrow] q.

KroneckerDelta (Built-in Mathematica Symbol)

KroneckerDelta[n_1, n_2, ...] gives the Kronecker delta \[Delta] Subscript[n, 1] Subscript[n, 2] ..., equal to 1 if all the n_i are equal, and 0 otherwise.

MapAll (Built-in Mathematica Symbol)

MapAll[f, expr] or f //@ expr applies f to every subexpression in expr.

Nand (Built-in Mathematica Symbol)

Nand[e_1, e_2, ...] is the logical NAND function. It evaluates its arguments in order, giving True immediately if any of them are False, and False if they are all True.

N (Built-in Mathematica Symbol)

N[expr] gives the numerical value of expr. N[expr, n] attempts to give a result with n-digit precision.

Nor (Built-in Mathematica Symbol)

Nor[e_1, e_2, ...] is the logical NOR function. It evaluates its arguments in order, giving False immediately if any of them are True, and True if they are all False.

Print (Built-in Mathematica Symbol)

Print[expr] prints expr as output.

Reals (Built-in Mathematica Symbol)

Reals represents the domain of real numbers, as in x \[Element] Reals.

SeriesData (Built-in Mathematica Symbol)

SeriesData[x, x_0, {a_0, a_1, ...}, n_min, n_max, den] represents a power series in the variable x about the point x_0. The a_i are the coefficients in the power series. The ...