Is there a way to add a vertical line (equal sign) to an augmented bmatrix (4×4) WITHOUT using array? Any help provided would be greatly appreciated.
[Tex/LaTex] Adding vertical line (equal sign) to augmented bmatrix WITHOUT using array
matricesrules
Related Solutions
For example
\documentclass[11pt]{book}
\usepackage{color}
\usepackage{multirow}
\begin{document}
\begin{center}
\begin{tabular}{c@{} c@{} c@{} c@{} c@{} c@{} c@{} c@{} c@{} c@{} c@{} c@{}}
%\multirow{2}{*}{$-$}&1&5&7&{\huge,}&5&&&5&{\color{white}1}&{\color{white}1}& {\color{white}1}\\
\multirow{2}{*}{$-$}&1&5&7&{\huge,}&5&&&\vline\,5&{\color{white}1}&{\color{white}1}& {\color{white}1}\\
\cline{9-12}
&1&5&&&&{\color{white}1}&{\color{white}1}&3&1&&\\
\cline{2-6}
\multirow{2}{*}{$-$}&&&7&&&&&&&&\\
&&&5&&&&&&&&\\
\cline{2-6}
&&&2&&&&&&&&\\
\end{tabular}
\end{center}
\end{document}
To address just the left-hand term of the equation: It is possible to employ a matrix environment inside a \left( ... \middle\vert ... \right) construct. To force the item \alpha_T to be typeset flush left inside the (one-column) matrix instead of centered, just add \hfill to its right. (This works because the matrix environment builds on the array environment; by default, the columns of a matrix environment are centered, achieved by inserting \hfil on each side of each cell. Because \hfill is "more infinite" than \hfil, the contents of that row get pushed to the far left.)
\documentclass{article}
\usepackage{amsmath} % for "matrix" environment
\begin{document}
\[
\left(
\begin{matrix}
\alpha_T \hfill \\ \alpha_{T-1}
\end{matrix}
\, \middle\vert \,
y_{1,T-1},\boldsymbol{\theta}
\right)
\sim N \dots
\]
\end{document}
Addendum, posted after the OP clarified the structure of the covariance matrix: Similarly, the mean vector and covariance matrix can be written with bmatrix (short for "matrix with brackets", I suppose) environments, again employing the \hfill device to set some of the items flush-left.
\dots
\sim N\left(
\begin{bmatrix}
d_{T-1}+T_{T-1}\alpha_{T-1\mid T-1}\\
\alpha_{T-1\mid T-1} \hfill
\end{bmatrix},
\begin{bmatrix}
T_{T-1}P_{T-1|T-1}T_{T-1}'+Q_{T-1} & T_{T-1}P_{T-1|T-1} \\
P_{T-1|T-1}T_{T-1}' \hfill & P_{T-1\mid T-1}\hfill
\end{bmatrix}
\right)
\]
Best Answer
No, you have to use
array, because theamsmathmatrix environments don't provide for specifying rules.The trick for emulating
bmatrix(orpmatrix) is having@{}at both ends.