LetterQ (Built-in Mathematica Symbol)

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

Level (Built-in Mathematica Symbol)

Level[expr, levelspec] gives a list of all subexpressions of expr on levels specified by levelspec. Level[expr, levelspec, f] applies f to the sequence of subexpressions.

LeveneTest (Built-in Mathematica Symbol)

LeveneTest[data] tests whether the variance of data is 1. LeveneTest[{data_1, data_2}] tests whether the variances of data_1 and data_2 are equal.LeveneTest[dspec, ...

LevyDistribution (Built-in Mathematica Symbol)

LevyDistribution[\[Mu], \[Sigma]] represents a Lévy distribution with location parameter \[Mu] and dispersion parameter \[Sigma].

LibraryFunctionError (Built-in Mathematica Symbol)

LibraryFunctionError[name, code] represents an error returned from a LibraryFunction.

LibraryFunctionLoad (Built-in Mathematica Symbol)

LibraryFunctionLoad[lib, fun, argtype, rettype] loads Wolfram Library lib and makes the library function fun available in Mathematica.

LibraryFunction (Built-in Mathematica Symbol)

LibraryFunction[args] represents a function that has been loaded from a Wolfram Library.

LibraryFunctionUnload (Built-in Mathematica Symbol)

LibraryFunctionUnload[fun] unloads a LibraryFunction so that it cannot be used.

LibraryUnload (Built-in Mathematica Symbol)

LibraryUnload[lib] unloads all functions that have been loaded from a Wolfram Library, then it unloads the library.

LiftingFilterData (Built-in Mathematica Symbol)

LiftingFilterData[...] represents lifting-filter data used to compute forward and inverse lifting wavelet transforms.