Mathematica has a general mechanism for handling messages generated during computations. Many built-in Mathematica functions use this mechanism to produce error and warning ...

Functions for creating power series. Here is the power series expansion for exp(x) about the point x0 to order x^4. Here is the series expansion of exp(x) about the point ...

DateList[] gives the current local date and time in the form {year, month, day, hour, minute, second}. DateList[time] gives a date list corresponding to an AbsoluteTime ...

Inpaint[image, region] retouches parts of image that correspond to nonzero elements in region.

Longest[p] is a pattern object that matches the longest sequence consistent with the pattern p.

SQLTable[...] represents a table in an SQL connection.

VectorAngle[u, v] gives the angle between the vectors u and v.

General Mathematica patterns provide a powerful way to do string manipulation. But particularly if you are familiar with specialized string manipulation languages, you may ...

LucasL[n] gives the Lucas number L_n.LucasL[n, x] gives the Lucas polynomial L_n (x).

Although Mathematica matches patterns in a purely structural fashion, its notion of structural equivalence is quite sophisticated. In particular, it takes account of ...