NumericFunction is an attribute that can be assigned to a symbol f to indicate that f[arg_1, arg_2, ...] should be considered a numeric quantity whenever all the arg_i are ...
Pi
(Built-in Mathematica Symbol) Pi is \[Pi], with numerical value \[TildeEqual] 3.14159.
PlotLabel is an option for graphics functions that specifies an overall label for a plot.
PowerSymmetricPolynomial[r] represents a formal power symmetric polynomial with exponent r.PowerSymmetricPolynomial[{r_1, r_2, ...}] represents a multivariate formal power ...
QHypergeometricPFQ[{a_1, ..., a_r}, {b_1, ..., b_s}, q, z] gives the basic hypergeometric series \[Null]_r \[Phi]_s (a; b; q; z).
Round
(Built-in Mathematica Symbol) Round[x] gives the integer closest to x. Round[x, a] rounds to the nearest multiple of a.
SawtoothWave[x] gives a sawtooth wave that varies from 0 to 1 with unit period.SawtoothWave[{min, max}, x] gives a sawtooth wave that varies from min to max with unit period.
Sec
(Built-in Mathematica Symbol) Sec[z] gives the secant of z.
SplineClosed is an option for B-spline functions and graphics primitives that specifies whether spline curves or surfaces should be closed.
Symbol
(Built-in Mathematica Symbol) Symbol["name"] refers to a symbol with the specified name.