# Polynomials over the Integers

The functions in this section are available for multivariate polynomials over the integers only.

## `Sign(f): RngMPolElt -> RngIntElt`

The sign of the leading coefficient of $f$.

## `AbsoluteValue(f): RngMPolElt -> RngMPolElt`

## `Abs(f): RngMPolElt -> RngMPolElt`

Return either $f$ or $-f$ according to which one has non-negative leading coefficient.

## `MaxNorm(f): RngMPolElt -> RngIntElt`

The maximum of the absolute values of the coefficients of $f$.

## `SumNorm(f): RngMPolElt -> RngIntElt`

The sum of the base coefficients of $f$.