Normalize[v] gives the normalized form of a vector v. Normalize[z] gives the normalized form of a complex number z.Normalize[expr, f] normalizes with respect to the norm ...
NumberQ
(Built-in Mathematica Symbol) NumberQ[expr] gives True if expr is a number, and False otherwise.
Plus
(Built-in Mathematica Symbol) x + y + z represents a sum of terms.
Quotient[m, n] gives the integer quotient of m and n. Quotient[m, n, d] uses an offset d.
RamanujanTau[n] gives the Ramanujan \[Tau] function \[Tau](n).
RandomSample[{e_1, e_2, ...}, n] gives a pseudorandom sample of n of the e_i.RandomSample[{w_1, w_2, ...} -> {e_1, e_2, ...}, n] gives a pseudorandom sample of n of the e_i ...
RiemannSiegelTheta[t] gives the Riemann\[Dash]Siegel function \[CurlyTheta](t).
SetAccuracy[expr, a] yields a version of expr in which all numbers have been set to have accuracy a.
Sow
(Built-in Mathematica Symbol) Sow[e] specifies that e should be collected by the nearest enclosing Reap. Sow[e, tag] specifies that e should be collected by the nearest enclosing Reap whose pattern ...
ToString[expr] gives a string corresponding to the printed form of expr in OutputForm. ToString[expr, form] gives the string corresponding to output in the specified form.