PixelValue (Built-in Mathematica Symbol)

PixelValue[image, {x, y}] gives the pixel value of image at position {x, y}.PixelValue[image, {x, y}, " type"] gives the pixel value converted to the specified type.

Quiet (Built-in Mathematica Symbol)

Quiet[expr] evaluates expr "quietly", without actually outputting any messages generated.Quiet[expr, {s_1::t_1, s_2::t_2, ...}] quietens only the specified messages during ...

RealDigits (Built-in Mathematica Symbol)

RealDigits[x] gives a list of the digits in the approximate real number x, together with the number of digits that are to the left of the decimal point. RealDigits[x, b] ...

Subfactorial (Built-in Mathematica Symbol)

Subfactorial[n] gives the number of permutations of n objects that leave no object fixed.

TextAlignment (Built-in Mathematica Symbol)

TextAlignment is an option for Cell, Style and related constructs which specifies how successive lines of text should be aligned.

UpperCaseQ (Built-in Mathematica Symbol)

UpperCaseQ[string] yields True if all the characters in the string are uppercase letters, and yields False otherwise.

VertexReplace (Built-in Mathematica Symbol)

VertexReplace[g, {v_1 -> w_1, v_2 -> w_2, ...}] replaces each vertex v_i in the graph g by w_i.

WaitNext (Built-in Mathematica Symbol)

WaitNext[{eid_1, eid_2, ...}] waits until the first evaluation represented by any of the eid_i finishes, then returns its result, the corresponding eid_i, and the list of ...

$CharacterEncoding (Built-in Mathematica Symbol)

$CharacterEncoding specifies the default raw character encoding to use for input and output functions.

Differentiation (Mathematica Tutorial)

Partial differentiation operations. This gives ( ∂ ) / ( ∂x ) x^n. This gives the third derivative.