# [texhax] Alignment \sum with large underscripts

Lars Madsen daleif at imf.au.dk
Mon May 1 11:13:22 CEST 2006

Victor Ivrii :

> The problem is a bit wider and covers all big operators with
> underscripts in display mode and with wide underscripts (wider than
> the operator itself, so \int will be especially vulnerable:
>
> in
> \begin{align}
> &\sum_{Aaaaaaaaaaaaaaaaaaaaa} ....\
> &\sum_{Bbbbbbbbbb} .....
> \end{align}
> are aligned on the left (on odd &) as they supposed to be: so A
> matches B but signs of the sum themselves are not aligned. Is there
> any standard way to align signs of sum rather than underscripts? (I
> can do it by hand for sure)
>

see the mathtools package

>
> Another related question: in {align} is there any way to align like in
> {tabular}{c} ?
>

that doesn't make much sence.

{tabular}{c}

is more or less just the gather environment.

/daleif

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