NonPositive[x] gives True if x is a non-positive number.

The functionality of Algebra`FiniteFields` is now available in the newly created Finite Fields Package.

Mathematica has a flexible system for specifying arbitrary symbolic assumptions about variables. It uses a wide range of sophisticated algorithms to infer the consequences of ...

Multinomial[n_1, n_2, ...] gives the multinomial coefficient (n_1 + n_2 + ...)!/(n_1! n_2! ...).

Unless f is a flat function, a pattern like f[x_,y_] stands only for instances of the function with exactly two arguments. Sometimes you need to set up patterns that can ...

Mathematica 6.0 represented a major new level in Mathematica's distinguished twenty-year history of broad cutting-edge algorithm development. Mathematica's unified ...

Complexes represents the domain of complex numbers, as in x \[Element] Complexes.

Constructing Matrices Getting and Setting Pieces of Matrices Scalars, Vectors, and Matrices

Built into Mathematica is the world's largest collection of both numerical and symbolic equation solving capabilities—with many original algorithms, all automatically ...

SignPadding is an option for NumberForm and related functions that specifies whether padding should be inserted after signs.