Re: Math equation with indentation

["302302" <302302@centrum.cz>]

>On Tue, 13 May 2008, 302302 wrote:
>
>> Hi,
>> I need to use a multieqaution in this form ( http://img233.imageshack.us/img233/2372/eqsx3.png ). I am mostly interested in the right brace and >the indentation after the "subject to". I tried to use mathmatrix but without success. Can you help me with it?>
>
>I am using nested matrices, but this is one case which will be best solved 
>by something equivalent for gathered and aligned. It has been on my todo 
>list for a long time.
>
>Here is a solution using nested matrices, where I use \noalign to fake 
>correct spacing after the first line (and changed the \cdots in the last 
>condition to \dots).
>
>\definemathmatrix[rightbrace][left={\left.},right={\,\right\}},n=1,align=left]
>
>\starttext
>
>\placeformula[+] \startformula
>\startrightbrace
>   \NC \min \{c_1 x_1 + c_2 x_2 + \cdots + c_n x_n \} \NR
>       \noalign{\vskip 0.2em}
>   \NC \text{subject to} \NR
>   \NC \quad
>       \startmathmatrix[n=9,align={middle,middle,middle,
>         middle,middle,middle,right,middle,middle},
>         distance=0.3em]
>         \NC a_{11} x_1 \NC + \NC a_{12} x_2 \NC +
>         \NC \cdots \NC + \NC a_{1n} x_n \NC = \NC b_1 \NR
>         \NC a_{21} x_1 \NC + \NC a_{22} x_2 \NC +
>         \NC \cdots \NC + \NC a_{2n} x_n \NC = \NC b_2 \NR
>         \NC            \NC   \NC  \vdots    \NC
>         \NC        \NC   \NC            \NC   \NC \vdots \NR
>         \NC a_{m1} x_1 \NC + \NC a_{m2} x_2 \NC +
>         \NC \cdots \NC + \NC a_{mn} x_n \NC = \NC b_m \NR
>         \NC            \NC   \NC            \NC
>         \NC        \NC
>         \NC \llap{x_1,x_2,\dots,x_n} \NC \ge \NC 0.
>       \stopmathmatrix \NR
>   \stoprightbrace
>\stopformula
>
>\stoptext
>
>
>Aditya

Great, thanks a lot! And is there any way how to get in the first line \min_{x \in X} with the parameter exactly below the "min"? Because in this  solution the parameter {x \in X} is on the right bottom, like in a line.

Czenek

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