How do i write this in latex plz
[Tex/LaTex] Delta-equal to symbol and matrix with dashed lines
matrices
Related Solutions
You can do it with blkarray. A couple of dummy columns are necessary for accommodating the horizontal rules.
\documentclass{article}
\usepackage{amsmath}
\usepackage{blkarray}
\begin{document}
\[
\renewcommand\arraystretch{1.3}
\begin{blockarray}{rcccccccc}
&&& u & v & w & \rho & T & \\
&&& \downarrow & \downarrow & \downarrow & \downarrow & \downarrow & \\
\begin{block}{rc[c@{}c|c|c|c|c@{}c]}
\text{Cont.} & \to && A_{c,u} & A_{c,v} & A_{c,w} & A_{c,\rho} & A_{c,T} &\vphantom{\smash[b]{\bigg|}} \\
\BAhhline{~~~-----~}
x\text{-mom} & \to && A_{r,\rho} & A_{r,u_r} & A_{r,u_{\theta}} & A_{r,u_z} & A_{r,T} & \\
\BAhhline{~~~-----~}
A_{ij}=\quad
y\text{-mom} & \to && A_{\theta,\rho} & A_{\theta,u_r} & A_{\theta,u_{\theta}} & A_{\theta,u_z} & A_{u_{\theta},T} & \\
\BAhhline{~~~-----~}
z\text{-mom} & \to && A_{z,\rho} & A_{z,u_r} & A_{z,u_{\theta}} & A_{z,u_z} & A_{z,T} & \\
\BAhhline{~~~-----~}
\text{energy} & \to && A_{e,\rho} & A_{e,u_r} & A_{e,u_{\theta}} & A_{e,u_z} & A_{e,T} & \vphantom{\smash[t]{\bigg|}}\\
\end{block}
\end{blockarray}
\]
\end{document}
The \vphantom trick is for getting slightly bigger brackets.
With blkarray it is possible:
\documentclass{article}
\usepackage{amsmath,blkarray,booktabs}
\newcommand{\cX}{\mathcal{X}}
\newcommand{\fixhd}[1]{%
\smash[#1]{\vphantom{\Big|}}%
}
\begin{document}
\[
\begin{blockarray}{c ccccc c ccccc}
& S_1 & \cdots & S_j & \cdots & S_N & & S_1 & \cdots & S_i & \cdots & S_N \\
\cmidrule{2-6} \cmidrule{8-12}
\begin{block}{c [ccccc] c [ccccc]}
T_1 & \fixhd{b} x_1 & \cdots & 0 & \cdots & 0 & T_{N+1} & 0 & \cdots & \cX_i^1 & \cdots & \cX_N^1 \\
\vdots & \vdots & \ddots & \vdots & \cdots & \vdots &
\vdots & \vdots & \ddots & \vdots & \cdots & \vdots \\
T_j & 0 & \cdots & x_j & \cdots & 0 & T_{N+i} & \cX_1^i & \cdots & 0 & \cdots & \cX_N^i \\
\vdots & \vdots & \ddots & \vdots & \cdots & \vdots &
\vdots & \vdots & \ddots & \vdots & \cdots & \vdots \\
T_N & 0 & \cdots & 0 & \cdots & x_N & T_{2N} & \cX_1^N & \cdots & \cX_i^N & \cdots & 0 \fixhd{t} \\
\end{block}
\noalign{\vspace{-1.5ex}}
& \BAmulticolumn{5}{c}{%
\underbrace{\hphantom{\begin{bmatrix}x_1&\cdots&x_j&\cdots&x_N\end{bmatrix}}}%
_{\text{Broadcasting phase}}%
}
&& \BAmulticolumn{5}{c}{%
\underbrace{\hphantom{\begin{bmatrix}\cX^N&\cdots&\cX^N&\cdots&\cX^N\end{bmatrix}}}%
_{\text{Cooperation phase}}%
}
\\
\end{blockarray}
\]
\end{document}
The \fixhd trick makes slightly bigger fences.
Best Answer
You can use
to render
\oversetplaces the first argument over the second argument and\verbrenders out exactly what its argument is in code form (kind of like the difference between code and text in Stack Exchange!).Please note that both
oversetand thebmatrixenvironment are provided by theamsmathpackage, so make sure to add\usepackage{amsmath}to your preamble.