Quaternions Package (Quaternions Package Guide)

J (Quaternions Package Symbol)

J represents a quaternion unit with J^2 == -1.

Resonance Absorption Lines Package (Resonance Absorption Lines Package Tutorial)

The functions defined in ResonanceAbsorptionLines` allow you to efficiently search through an atomic data table for resonance absorption lines. Other functions give ...

VariationalD (Variational Methods Package Symbol)

VariationalD[f, u[x ], x] returns the variational derivative of the integral \[Integral]f \[DifferentialD]x with respect to u[x], where the integrand f is a function of u, ...

Div (Vector Analysis Package Symbol)

Div[f] gives the divergence, \[Del]\[CenterDot]f, of the vector field f in the default coordinate system. Div[f, coordsys] gives the divergence of f in the coordinate system ...

RawXML (XML Package Symbol)

RawXML["string"] represents a raw string fragment of XML that can be used inside a SymbolicXML expression.

Algebraic Transformations (Mathematica Guide)

Mathematica includes functions for performing a variety of specific algebraic transformations. Some are algorithmically straightforward; others include highly sophisticated ...

Differential Operators (Mathematica Guide)

Mathematica's approach to differential operators provides both an elegant and a convenient representation of mathematical structures, and an immediate framework for strong ...

Help Menu (Mathematica Guide)

Image Representation (Mathematica Guide)

Mathematica's symbolic architecture allows a unique representation and treatment of images in both programs and documents. Mathematica supports images with arbitrary numbers ...