i'm working on my latex thesis and i want to represent this equation, matrix is upperCase letter with 2 lines under it, and vector just one line below, see the picture attached 
can someone help me out with a way to represent it
[Tex/LaTex] representation of vector and matrix in latex
matricesvector
Related Solutions
With the code of this answer, and a bit of effort (manual tweaking). I got this (far from optimal, but if you have to fight with this kind of matrix only one time, it might work).
I used the \coolunder, \coolover, \coolrightbrace and \coolleftbrace from the answer I linked, but a bit tweaked to adapt the mtpro2 package. The reason to use the mtpro2 package is that it provides those curly long braces. If you don't have this font/package, just change the definitions of the commands to
\newcommand\coolover[2]{\mathrlap{\smash{\overbrace{\phantom{%
\begin{matrix} #2 \end{matrix}}}^{\mbox{$#1$}}}}#2}
\newcommand\coolunder[2]{\mathrlap{\smash{\underbrace{\phantom{%
\begin{matrix} #2 \end{matrix}}}_{\mbox{$#1$}}}}#2}
\newcommand\coolleftbrace[2]{%
#1\left\{\vphantom{\begin{matrix} #2 \end{matrix}}\right.}
\newcommand\coolrightbrace[2]{%
\left.\vphantom{\begin{matrix} #1 \end{matrix}}\right\}#2}
Code
Here it is the code. As I said, it is far from optimal (it has a lot of phantoms):
\documentclass{scrartcl}
\usepackage{mathtools}
\usepackage{newtxtext}
\usepackage[lite]{mtpro2}
\usepackage{multirow}
\usepackage[hmargin=1.5cm]{geometry}% You have to find the way to deal with the margins.
% You can comment this (only used to get the appearence of the image).
\setkomafont{captionlabel}{\scshape}
\setcounter{equation}{4}
\setcounter{figure}{1}
% The commands used to get the desired braces.
\newcommand\coolover[2]{\mathrlap{\smash{\overcbrace{\phantom{%
\begin{matrix} #2 \end{matrix}}}^{\mbox{$#1$}}}}#2}
\newcommand\coolunder[2]{\mathrlap{\smash{\undercbrace{\phantom{%
\begin{matrix} #2 \end{matrix}}}_{\mbox{$#1$}}}}#2}
\newcommand\coolleftbrace[2]{%
#1\LEFTRIGHT\{.{\vphantom{\begin{matrix} #2 \end{matrix}}}}
\newcommand\coolrightbrace[2]{%
\LEFTRIGHT.\}{\vphantom{\begin{matrix} #1 \end{matrix}}}#2}
\newcommand\Vdots{\vdots}% You can change the size/appearence of the dots in
\newcommand\Cdots{\cdots}% the matrixes easily changing this definitions.
\begin{document}
\begin{center}
\bfseries PHILIP E. PFEIFER AND STUART JAY DEUTCH
\end{center}
\begin{figure}[h!]
\small
\centering
\begin{equation}
\begin{matrix}
\coolleftbrace{s = 1}{\\ \\ \vphantom{\Vdots} \\ \\} \\
\coolleftbrace{s = 2}{\\ \\ \vphantom{\Vdots} \\ \\} \\
\vphantom{\Vdots} \\
\coolleftbrace{s = k}{\\ \\ \vphantom{\Vdots} \\ \\}
\end{matrix}%
\begin{bmatrix}
\gamma_{00}(1) \\
\gamma_{01}(1) \\
\Vdots \\
\gamma_{\lambda0}(1) \\ \hline
\gamma_{00}(2) \\
\gamma_{01}(2) \\
\Vdots \\
\gamma_{\lambda0}(2) \\ \hline
\Vdots \\ \hline
\gamma_{00}(1) \\
\gamma_{01}(1) \\
\Vdots \\
\gamma_{\lambda0}(1)
\end{bmatrix}
=
\left[
\begin{array}{@{} cccc|cccc|c|c @{}}
\gamma_{00}(0) & \gamma_{01}(0) & \Cdots & \gamma_{0\lambda}(0) & \gamma_{00}(-1) & \gamma_{01}(-1) & \Cdots & \gamma_{0\lambda}(-1) & \multirow{4}{*}{$\Cdots$} & \multirow{4}{*}{$(1 - k)$} \\
\gamma_{10}(0) & \gamma_{11}(0) & \Cdots & \gamma_{1\lambda}(0) & \gamma_{10}(-1) & \gamma_{11}(-1) & \Cdots & \gamma_{1\lambda}(-1) & & \\
\multicolumn{4}{c|}{\Vdots} & \multicolumn{4}{c|}{\Vdots} & & \\
\gamma_{\lambda0}(0) & \gamma_{\lambda1}(0) & \Cdots & \gamma_{\lambda\lambda}(0) & \gamma_{\lambda0}(-1) & \gamma_{\lambda1}(-1) & \Cdots & \gamma_{\lambda\lambda}(-1) & & \\ \hline
\multicolumn{4}{c|}{\multirow{4}{*}{$(1)$}} & \multicolumn{4}{c|}{\multirow{4}{*}{$(0)$}} & & \multirow{4}{*}{$(2 - k)$} \\
& & & & & & & & & \\
& & & & & & & \vphantom{\Vdots} & & \\
& & & & & & & & & \\ \hline
\multicolumn{4}{c|}{\Vdots} & \multicolumn{4}{c|}{\Vdots} & & \Vdots \\ \hline
\multicolumn{4}{c|}{\multirow{4}{*}{$(k - 1)$}} & \multicolumn{4}{c|}{\multirow{4}{*}{$(k - 2)$}} & \multirow{4}{*}{$\Cdots$} & \multirow{4}{*}{$(0)$} \\
& & & & & & & & & \\
& & & & & & & \vphantom{\Vdots} & & \\
\coolunder{j = 1}{\hphantom{\gamma_{00}(0)} & \hphantom{\gamma_{01}(0)} & \hphantom{\Cdots} & \hphantom{\gamma_{0\lambda}(0)}} & \coolunder{j = 2}{\hphantom{\gamma_{00}(-1)} & \hphantom{\gamma_{01}(-1)} & \hphantom{\Cdots} & \hphantom{\gamma_{0\lambda}(1)}} & & \coolunder{j = k}{\hphantom{(1 - k)}}
\end{array}
\right]
\begin{bmatrix}
\phi_{10} \\
\phi_{11} \\
\Vdots \\
\phi_{1\lambda} \\ \hline
\phi_{20} \\
\phi_{21} \\
\Vdots \\
\phi_{2\lambda} \\ \hline
\Vdots \\ \hline
\phi_{k0} \\
\phi_{k1} \\
\Vdots \\
\phi_{k\lambda}
\end{bmatrix}
\end{equation}\bigskip
\caption{The space-time analogue of the Yule-Walker equations}
\end{figure}
\end{document}
And this is how it looks:
Best Answer
The immediate problem can be solved with an
array, with a local setting of\arraystretchfor reducing the gap between the two rows.I strongly advise to use macros for inputting matrices and vectors. When your supervisor will realize that the old-fashioned notation is also very ugly in print (it was used in the typewriter times), you can simply change the definitions. If you switch the comments in the code above, the result will be
without changing the code in the document body.