Definition:Latin Square/Element

Definition
Let $\mathbf L$ be a Latin square of order $n$.

The individual $n \times n$ symbols that go to form $\mathbf L$ are known as the elements of $\mathbf L$.

The element at row $i$ and column $j$ is called element $\left({i, j}\right)$ of $\mathbf L$, and can be written $a_{i j}$, or $a_{i, j}$ if $i$ and $j$ are of more than one character.

If the indices are still more complicated coefficients and further clarity is required, then the form $a \left({i, j}\right)$ can be used.

Note that the first subscript determines the row, and the second the column, of the Latin square where the element is positioned.

Also denoted as
Some sources prefer to use the uppercase form of the letter for the element:
 * $ A_{i j}$

Also known as
The elements of a Latin Square are sometimes seen as entries of a Latin Square.