When I have equations, as in

```
\begin{equation} ... \end{equation}
```

Can I arbitrarily assign the numbers to the equations? Instead of the usual order (1), (2), (3), …, I'd like something like (1), (2.1), (2.2), (2.3), (3.1), (3.2), (4), …

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# [Tex/LaTex] Label equations arbitrarily

equationslabels

When I have equations, as in

```
\begin{equation} ... \end{equation}
```

Can I arbitrarily assign the numbers to the equations? Instead of the usual order (1), (2), (3), …, I'd like something like (1), (2.1), (2.2), (2.3), (3.1), (3.2), (4), …

## Best Answer

Yes, absolutely, using the

`amsmath`

package and its`\tag`

command.A little example

After reading your comment, if you want the

`equation`

number to inherit the`theorem`

number, then you can use, for example,and then you don't have to tag equations manually.