Fungrim entry: e352ca

\operatorname{xgcd}\!\left(a, 0\right) = \left(\left|a\right|, \operatorname{sgn}\!\left(a\right), 0\right)

Assumptions:

a \in \mathbb{Z}

TeX:

\operatorname{xgcd}\!\left(a, 0\right) = \left(\left|a\right|, \operatorname{sgn}\!\left(a\right), 0\right)

a \in \mathbb{Z}

Definitions:

Fungrim symbol	Notation	Short description
`XGCD`	$\operatorname{xgcd}\!\left(a, b\right)$	Extended greatest common divisor
`Abs`	$\left\|z\right\|$	Absolute value
`Sign`	$\operatorname{sgn}\!\left(z\right)$	Sign function
`ZZ`	$\mathbb{Z}$	Integers

Source code for this entry:

Entry(ID("e352ca"),
    Formula(Equal(XGCD(a, 0), Tuple(Abs(a), Sign(a), 0))),
    Variables(a),
    Assumptions(Element(a, ZZ)))

Topics using this entry

2019-06-18 07:49:59.356594 UTC