"Defining Variables" discussed assignments such as x=y which set x equal to y. Here we discuss equations, which test equality. The equation x==y tests whether x is equal to ...

Dealing with fonts under Linux can sometimes be tricky. The important issues in dealing with fonts in Mathematica are presented in this tutorial for your convenience. The ...

In many cases, you will find it convenient to communicate with external programs at a high level, and to exchange structured data with them. On almost all computer systems, ...

Total differentiation operations. When you find the derivative of some expression f with respect to x, you are effectively finding out how fast f changes as you vary x. Often ...

You can think of an expression like f[x] as being formed by applying an operator f to the expression x. You can think of an expression like f[g[x]] as the result of composing ...

DatabaseLink provides a number of functions for connection to an SQL database. It also supports a resource mechanism that allows the details of how the connection is set up ...

SQLDropTable drops tables from a database. An alternative, using raw SQL, is demonstrated in "Dropping Tables with Raw SQL". If you find that the examples in this tutorial do ...

JavaBlock[expr] causes all new Java objects returned to Mathematica during the evaluation of expr to be released when expr finishes. It is an error to refer to such an object ...

NETBlock[expr] causes all new .NET objects returned to Mathematica during the evaluation of expr to be released when expr finishes.

TetGenConvexHull[points] generates a convex hull for a 3D point set.