$\mathcal{A}$ and if $x,y,z \in \mathcal{A}$, then
$\alg{\set{x,y,z}}$ is the smallest subalgebra of $\mathcal{A}$
containing the set $\set{x,y,z}$.
+
+ If $R$ has a multiplicative identity (that is, a unit) element,
+ then that element is denoted by $\unit{R}$.
\end{section}
\begin{section}{Algorithm}
\end{item}
\end{itemize}
%
- The factorial of the number $10$ is $\factorial{10}$.
+ The factorial of the number $10$ is $\factorial{10}$, and the
+ least common multiple of $4$ and $6$ is $\lcm{\set{4,6}} =
+ 12$.
The direct sum of $V$ and $W$ is $\directsum{V}{W}$. Or three
things, $\directsumthree{U}{V}{W}$. How about more things? Like