The eqnarray environment is typically used to display a sequence of equations or inequalities; it may also be used to manage spacing for long equations. The\begin{eqnarray[*]} var_1 & rel_1 & eq1 \\ var_2 & rel_2 & eq2 \\ .... \end{eqnarray[*]}

It is very much like a three-column
array environment, with position argument `rcl`,
i.e., the columns are justified right, center, and left, respectively.
(However, `\multicolumn` may not be used.)

Consecutive rows are separated by `\\`
commands and consecutive items within a
row separated by an `&`. Any item may be empty, i.e., no text.

A separate equation number is placed on every
line unless that line has a `\nonumber` command.
The optional `eqnarray*` form does not generate any equation numbers.

A `\label` command anywhere within a
row generates a reference to that row's number.

Related topics

- Environments
- LaTeX Modes
- Array Environment
- Equation Environment
- Displaymath Environment
- Math Formulas

Revised: Sheldon Green, 26 Jun 1995.