[texhax] Matrix problem

E. Krishnan ekmath at asianetindia.com
Wed Apr 12 18:03:05 CEST 2006


On Tue, 11 Apr 2006, Emrah Akyar wrote:

> Can someone tell me how to create the matrix like:
> 
>   A B
> ( a b ) C
> ( c d ) D
> 
> I want to type the column and row headers top of the each column and right
> of the each row outside the matrix brackets.

1. A quick trick would be to use the "amsmath" package and type

   \begin{equation*}
     \begin{matrix}
       \begin{matrix}
        A & B & 
       \end{matrix}\\
       \begin{pmatrix} 
        a & b\\
        c & d
       \end{pmatrix} 
       \begin{matrix}
        C\\
        D
       \end{matrix}
     \end{matrix}
   \end{equation*}

2. TeX has a macro "\bordermatrix" but this puts row signifiers on the 
   *left*   

3. Herbert Voss has written a document named "mathmode.pdf" which shows 
   how  the "\bordermatrix" macro can be tweaked to meet different 
   requirements. It is available at

       www.tug.org/tex-archive/info/math/voss/mathmode/Mathmode.pdf 

-- 
Krishnan



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