EulerPhi[n] gives the Euler totient function \[Phi](n).
Expectation[expr, x \[Distributed] dist] gives the expectation of expr under the assumption that x follows the probability distribution dist. Expectation[expr, x ...
ExpGammaDistribution[\[Kappa], \[Theta], \[Mu]] represents an exp-gamma distribution with shape parameter \[Kappa], scale parameter \[Theta], and location parameter \[Mu].
Factor
(Built-in Mathematica Symbol) Factor[poly] factors a polynomial over the integers. Factor[poly, Modulus -> p] factors a polynomial modulo a prime p. Factor[poly, Extension -> {a_1, a_2, ...}] factors a ...
FindClusters[{e_1, e_2, ...}] partitions the e i into clusters of similar elements. FindClusters[{e_1 -> v_1, e_2 -> v_2, ...}] returns the v_i corresponding to the e i in ...
FisherZDistribution[n, m] represents a Fisher z distribution with n numerator and m denominator degrees of freedom.
HotellingTSquareDistribution[p, m] represents Hotelling's T^2 distribution with dimensionality parameter p and m degrees of freedom.
LindleyDistribution[\[Delta]] represents a Lindley distribution with shape parameter \[Delta].
NestList[f, expr, n] gives a list of the results of applying f to expr 0 through n times.
PolarTicks is an option for sector charts and polar plots that specifies tick marks for polar axes.