equation (LaTeX2e unofficial reference manual (November 2018))

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### 8.9 `equation`

Synopsis:

    \begin{equation}
      mathematical text
    \end{equation}

The same as a `displaymath` environment (see displaymath) except that LaTeX puts an equation number flush to the right margin. The equation number is generated using the `equation` counter.

You should have no blank lines between `\begin{equation}` and `\begin{equation}`, or LaTeX will tell you that there is a missing dollar sign.

The package `amsmath` package has extensive displayed equation facilities. New documents should include this package.

Unofficial LaTeX2e reference manual