Function Names as Expressions (Mathematica Tutorial)

In an expression like f[x], the 'function name' f is itself an expression, and you can treat it as you would any other expression. You can replace names of functions using ...

Properties of Strings (Mathematica Tutorial)

Much of what Mathematica does revolves around manipulating structured expressions. But you can also use Mathematica as a system for handling unstructured strings of text. ...

The Meaning of Expressions (Mathematica Tutorial)

The notion of expressions is a crucial unifying principle in Mathematica. It is the fact that every object in Mathematica has the same underlying structure that makes it ...

3DS (Mathematica Import/Export Format)

MIME types: application/x-3ds, image/x-3ds Autodesk 3DS file format. Scene description and 3D modeling format. Used for 3D modeling and animation. Native format of Autodesk ...

LWO (Mathematica Import/Export Format)

MIME type: image/x-lwo LightWave 3D object file format. Native format of the LightWave 3D rendering and animation software. LWO is an acronym for LightWave Object. Developed ...

NOFF (Mathematica Import/Export Format)

NOFF 3D geometry format. Used for storing and exchanging 3D models. NOFF is an acronym derived from Object File Format. Related to OFF and COFF. Occasionally called CNOFF if ...

OBJ (Mathematica Import/Export Format)

Wavefront OBJ format. 3D geometry format. Used for storage and exchange of 3D geometry definitions. Native format of the Wavefront application. Stores a geometry as a ...

VTK (Mathematica Import/Export Format)

Visualization Toolkit format. Used for storage of 3D models. Native format of the open-source Visualization Toolkit software. ASCII or binary format. VTK is an acronym ...

Expand (Built-in Mathematica Symbol)

Expand[expr] expands out products and positive integer powers in expr. Expand[expr, patt] leaves unexpanded any parts of expr that are free of the pattern patt. >

HeavisideTheta (Built-in Mathematica Symbol)

HeavisideTheta[x] represents the Heaviside theta function \[Theta](x), equal to 0 for x < 0 and 1 for x > 0. HeavisideTheta[x_1, x_2, ...] represents the multidimensional ...