Hi, Semih,

   I wasn't able to do this in "pure" LyX, but if you insert some ERT (ctrl-L) 
and put the following into it, you may get what you want:

$\left[
\begin{array}{cl|c} 
K_{aa} & K_{ai} & 0 \\
K_{ia} & K_{ii} & K_{ib} \\ 
\hline 
0 & K_{bi} & K_{bb} 
\end{array}  
\right] 
= 
\left[
\begin{array}{c|c} 
K_{mm} & K_{ms} \\ 
\hline
K_{sm} & K_{ss}
\end{array}
\right] $

        Perhaps that will help for the time-being.  Note that the vertical 
lines are controlled by the {cl|c} and {c|c} statements right after the 
"\begin{array}" parts. 

                      Cheers, 
                                       C.O.



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Down with categorical imperative!
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________________________________
From: Semih Özmen <[email protected]>
To: [email protected]
Sent: Tuesday, June 2, 2009 11:27:36 AM
Subject: Augmented like matrix

 
Hi,
 
I need to express the equation which 
is presented in attachment. 
I could not do the horizontal or vertical lines in 
to matrix..Any suggestions?


      

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