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From: Tarik Kara <ktarik@Bilkent.EDU.TR>
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Subject: Re: problem with \noalign
Date: Fri, 20 Jul 2001 21:03:18 +0300 (EET DST)
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Dear Hans,

I checked the TeXbook and I noticed that I have used
\eqalign when I should \eqalignno. Sorry about this.
I am looking forward for more documentation on math.

Tar{\i}k

On Fri, 20 Jul 2001, Hans Hagen wrote:

> At 10:22 PM 7/16/2001 +0300, Tarik Kara wrote:
> >The \noalign command does not work as expected (as I expect) inside
> >\eqaling{..}
> >
> >When I type
> >
> >\placeformula[-]
> >\startformula
> >\eqalign{
> >     \forall s_{-i}\in S_{-i} \quad
> >           & h(s^{\ast}_{i},s_{-i})\pref{R_{i}} h(s_{i}',s_{-i}),\cr
> >     \noalign{\hbox{and}} %
> >     \exists s_{-i}\in S_{-i}\quad
> >          & h(s^{\ast}_{i},s_{-i})\pref{P_{i}}
> >            h(s_{i}',s_{-i})\enspace.\cr}
> >\stopformula
> >
> >the `and` is aligned with \forall. I was expecting to be in the left
> >margin of the page. Is there a bug (I am using ConTeXt  ver: 2001.7.11) or
> >am I doing something wrong.
> 
> The allignment is a box as a whole, so the 'and' will align to the side of 
> the alignment. Same for plain.
> 
> There are some extensions to the context formula handling that permit you 
> to align formulas left / right/ indented and so on, as well as to define 
> alignment classes. Yet undocumented.
> 
> Hans
> -------------------------------------------------------------------------
>                                    Hans Hagen | PRAGMA ADE | pragma@wxs.nl
>                        Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>   tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
> -------------------------------------------------------------------------
> 
>