[OS X TeX] Using align with "or"
schremmer.alain at gmail.com
Mon Apr 18 03:39:57 CEST 2011
On Apr 17, 2011, at 6:47 PM, Ross Moore wrote:
> Hi David,
> On 18/04/2011, at 8:35 AM, David Arnold wrote:
>> Bruno et al,
>> This is precisely what I needed. But now I think I also need an
>> explanation. We have:
>> But the first row has 9 ampersands. I've stumbled into solutions
>> like this on my own, but I just don't understand the use of the
> Lee Witt said:
>>>> If you want to align n columns use 2n-1 &s
> The point is that the alignment at each ampersand alternates:
> right alignment, then left alignment.
> So if you have columns each with an alignment point "inside" the
> then you need "&&" between the columns,
> A&=B && C&=D && ...
>> Is this use of the ampersands explained in any documentation?
> Try The LaTeX Companion 1st or 2nd editions.
But Companion two does not even mention \alignat. I just looked
because I had been "doing it by hand", that is with a lot of
\hspaces, and wanted to know if I had missed it.
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