I am trying to align two inequlities vertically. The `\le`

signs should have the same horizontal positions and the term in the should be centered. My first attempt:

```
\begin{align*}
\sum a &\le \sum b &\le \sum c \\
\log \sum a &\le \log \sum b &\le \log \sum c
\end{align*}
```

Doesn't work. My second attempt:

```
\[
\begin{array}{rcccl}
\sum a &\le& \sum b &\le& \sum c \\
\log \sum a &\le& \log \sum b &\le& \log \sum c
\end{array}
\]
```

The alignment is good, but the sum signs are smaller than in the align environment.

What is the "best" way to do this LaTeX?

## Best Answer

`alignat`

is your friend:produces:

I needed to add two extra alignment characters between the columns, and a

`{}`

to make the`\le`

a binary operator. The number of &'s should be 2n-1 where n is the argument given (2 in the case above).Although now that I read the question again I realize I didn't answer it. It seems that you want the

`\sum`

term to be centered...The only way I can think of doing it is a bit ugly:

which gives the desired result (I think):

but requires manual selection of the largest bit of text, and use of a length...any ideas for improvement?