ConditionalExpression (Built-in Mathematica Symbol)

ConditionalExpression[expr, cond] is a symbolic construct that represents the expression expr when the condition cond is True.

Together (Built-in Mathematica Symbol)

Together[expr] puts terms in a sum over a common denominator, and cancels factors in the result.

NumberFieldRegulator (Built-in Mathematica Symbol)

NumberFieldRegulator[a] gives the regulator of the field \[DoubleStruckCapitalQ][a] generated by the algebraic number a.

FractionBox (Built-in Mathematica Symbol)

FractionBox[x, y] is a low-level formatting construct that represents x/y in notebook expressions.

Get (Built-in Mathematica Symbol)

<< name reads in a file, evaluating each expression in it, and returning the last one.

$CompilationTarget (Built-in Mathematica Symbol)

$CompilationTarget gives the default value for the option CompilationTarget of Compile.

KleinInvariantJ (Built-in Mathematica Symbol)

KleinInvariantJ[\[Tau]] gives the Klein invariant modular elliptic function J(\[Tau]).

CarmichaelLambda (Built-in Mathematica Symbol)

CarmichaelLambda[n] gives the Carmichael function \[Lambda](n), defined as the smallest integer m such that k^m \[Congruent] 1 mod n for all k relatively prime to n.

Unprotect (Built-in Mathematica Symbol)

Unprotect[s_1, s_2, ...] removes the attribute Protected for the symbols s_i. Unprotect["form_1", "form_2", ...] unprotects all symbols whose names textually match any of the ...

Mathematica Sessions (Mathematica Guide)

Mathematica provides a uniquely powerful interactive environment for building up arbitrarily complex computations, under convenient interactive or programmatic control.