In many kinds of numerical computations, it is convenient to introduce approximate functions. Approximate functions can be thought of as generalizations of ordinary ...

HammingDistance[u, v] gives the Hamming distance between strings or vectors u and v.

StirlingS1[n, m] gives the Stirling number of the first kind S_n^(m).

Mathematica 's interactive graphics capabilities let you determine the coordinates of a single point. You can also get arbitrary sequences of points and paths, and analyze ...

$SessionID is a number set up to be unique to a particular Mathematica session.

$TimeUnit gives the minimum time interval in seconds recorded on your computer system.

Count[list, pattern] gives the number of elements in list that match pattern. Count[expr, pattern, levelspec] gives the total number of subexpressions matching pattern that ...

PseudoInverse[m] finds the pseudoinverse of a rectangular matrix.

Break[] exits the nearest enclosing Do, For, or While.

Unevaluated[expr] represents the unevaluated form of expr when it appears as the argument to a function.