Ceiling
(Built-in Mathematica Symbol) Ceiling[x] gives the smallest integer greater than or equal to x. Ceiling[x, a] gives the smallest multiple of a greater than or equal to x.
n!! gives the double factorial of n.
FixedPoint[f, expr] starts with expr, then applies f repeatedly until the result no longer changes.
ModularLambda[\[Tau]] gives the modular lambda elliptic function \[Lambda](\[Tau]).
RiemannSiegelZ[t] gives the Riemann\[Dash]Siegel function Z(t).
Split
(Built-in Mathematica Symbol) Split[list] splits list into sublists consisting of runs of identical elements. Split[list, test] treats pairs of adjacent elements as identical whenever applying the ...
StieltjesGamma[n] gives the Stieltjes constant \[Gamma]_n. StieltjesGamma[n, a] gives the generalized Stieltjes constant \[Gamma]_n (a).
StirlingS2[n, m] gives the Stirling number of the second kind \[ScriptCapitalS]_n^(m).
Placeholder[name] represents a placeholder labeled with name that indicates a place to type.Placeholder[] gives the empty placeholder \[Placeholder].
SplineDegree is an option for spline functions and graphics primitives that specifies the degree of polynomial basis to use.