# Definition:Lowest Common Multiple/Integral Domain

## Definition

Let $D$ be an integral domain and let $a, b \in D$ be nonzero.

$l$ is the lowest common multiple of $a$ and $b$ if and only if:

$(1): \quad$ both $a$ and $b$ divide $l$
$(2): \quad$ if $m$ is another element such that $a$ and $b$ divide $m$, then $l$ divides $m$.

## Also known as

The lowest common multiple is also known as the least common multiple.

It is usually abbreviated LCM, lcm or l.c.m.

The notation $\lcm \set {a, b}$ can be found written as $\sqbrk {a, b}$.

This usage is not recommended as it can cause confusion.

## Also see

• Results about Lowest Common Multiple can be found here.