If you have a function defined in an external program, then what you need to do in order to make it possible to call the function from within Mathematica is to add ...

CreateObjectFile[source, name] compiles a string of C code and creates an executable file, name.ext.CreateObjectFile[{file 1, ...}, name] compiles a number of C source files ...

GraphLayout is an option to Graph and related functions that specifies what layout to use for graph components and collections of components.

HornerForm[poly] puts the polynomial poly in Horner form.HornerForm[poly, vars] puts poly in Horner form with respect to the variable or variable list ...

PermutationGroup[{perm_1, ..., perm_n}] represents the group generated by multiplication of the permutations perm_1, ..., perm_n.

It is always a good idea to give variables and functions names that are as explicit as possible. Sometimes, however, such names may get inconveniently long. In Mathematica, ...

A full Mathematica installation consists of thousands of separate files, arranged in several hundred directories under the main installation directory. The location of the ...

DateQ[{year, month, day}] yields True if date {year, month, day} is a valid date in the current calendar system, and yields False otherwise. DateQ[{year, month, day, hour, ...

CharacteristicFunction[dist, t] gives the characteristic function for the symbolic distribution dist as a function of the variable t.CharacteristicFunction[dist, {t_1, t_2, ...

When summarizing data, it is often useful to analyze it by subgroup. For example, crop yields could be categorized by seed variety, or average patient recovery time by ...