JacobiZeta[\[Phi], m] gives the Jacobi zeta function Z(\[Phi] \[VerticalSeparator] m).
LerchPhi[z, s, a] gives the Lerch transcendent \[CapitalPhi] (z, s, a).
LogGamma[z] gives the logarithm of the gamma function log \[CapitalGamma](z).
ProteinData["prot"] gives the reference amino acid sequence for the protein prot.ProteinData["prot", " property"] gives the value of the specified property for the protein ...
QBinomial[n, m, q] gives the q-binomial coefficient (n; m)_q.
RandomChoice[{e_1, e_2, ...}] gives a pseudorandom choice of one of the e_i. RandomChoice[list, n] gives a list of n pseudorandom choices. RandomChoice[list, {n_1, n_2, ...}] ...
ReliefImage[array] generates a relief image of an array of height values.
Re
(Built-in Mathematica Symbol) Re[z] gives the real part of the complex number z.
Root
(Built-in Mathematica Symbol) Root[f, k] represents the exact k\[Null]^th root of the polynomial equation f[x] == 0. Root[{f, x_0}] represents the exact root of the general equation f[x] == 0 near x = ...
s_1 ~~ s_2 ~~ ... or StringExpression[s_1, s_2, ...] represents a sequence of strings and symbolic string objects s_i.