StieltjesGamma[n] gives the Stieltjes constant \[Gamma]_n. StieltjesGamma[n, a] gives the generalized Stieltjes constant \[Gamma]_n (a).
PolyaAeppliDistribution[\[Theta], p] represents a Polya\[Dash]Aeppli distribution with shape parameters \[Theta] and p.
LucasL
(Built-in Mathematica Symbol) LucasL[n] gives the Lucas number L_n.LucasL[n, x] gives the Lucas polynomial L_n (x).
Scale
(Numerical Calculus Package Symbol) Scale is an option to NLimit and ND that specifies the scale at which variations are expected.
Mathematica contains a very powerful system of integration. It can do almost any integral that can be done in terms of standard mathematical functions.
Do Basic Calculations Do Constrained Nonlinear Optimization Control the Precision and Accuracy of Numerical Results
Tolerance is an option for various numerical options which specifies the tolerance that should be allowed in computing results.
KDistribution[\[Nu], w] represents a K distribution with shape parameters \[Nu] and w.
LindleyDistribution[\[Delta]] represents a Lindley distribution with shape parameter \[Delta].
Threshold[data] thresholds data by replacing values close to zero by zero.Threshold[data, tspec] thresholds data using threshold specification tspec.Threshold[image, ...] ...