Center of an associative algebra
= Center of an associative algebra
{title2=$Z(A)$}
The center of an <associative algebra> $A$ is
$$
Z(A)=\{z\in A:za=az\text{ for every }a\in A\}.
$$
= Center of an associative algebra
{title2=$Z(A)$}
The center of an <associative algebra> $A$ is
$$
Z(A)=\{z\in A:za=az\text{ for every }a\in A\}.
$$