[Tex/LaTex] Two-column list

#enumeratematrices

Does anybody here know how to generate a two-column list like the one that appears in the attached image? I'm having a hard time making the matrices look as neatly aligned as in the shared image…

enter image description here

Best Answer

The next code was using the matrix environment within the multicol package

\documentclass{article}
\usepackage{multicol}
\usepackage{amsmath}

\begin{document}
\begin{enumerate}
    \item Determinar la transpuesta de cada una de las sigientes matrices. Adem\'as si la matriz es cuadrada, calcular su traza.
    \begin{multicols}{2}
        \begin{enumerate}
            \item   
            $\left( \begin{matrix}
            -4 & 2 \\
            5 & -1
            \end{matrix} \right)$
            \item           
            $\left( \begin{matrix}
            0 & 8 & -6 \\
            3 & 4 & 7 
            \end{matrix} \right)$
            \item 
            $\left( \begin{matrix}
            -3 & 9 \\
            0 & -2 \\
            6 & 1 
            \end{matrix} \right)$
            \item 
            $\left( \begin{matrix}
            10 & 0 & -8 \\
            2 & -4 & 3 \\
            -5 & 7 & 6 
            \end{matrix} \right)$
        \end{enumerate}
    \end{multicols}
\end{enumerate}
\end{document}

Related Solutions

[Tex/LaTex] Specific blockmatrices

Here's a possible code for the first matrix:

\documentclass{book}
\usepackage{easybmat}   

\begin{document}

\[ 
A= \delta^{-2}
\left(
\begin{BMAT}[8pt]{cc:cc:cc:c}{cc:cc:cc:c}
  1 & -1 & 0 & & & & 0 \\
  -1 & 1 & 0 & 0 & 0 & & \\
  0 & 0 & \bullet & \bullet & 0 & &\\
  & 0 & \bullet & \bullet & 0 & 0 & \\
  &  & 0 & 0 & \bullet & \bullet & 0 \\
  &  &  & 0 & \bullet & \bullet & 0 \\
  0 &  &  & 0 & 0 &0 &
\end{BMAT} 
\right)
\]

\end{document}

enter image description here

Using this example code you can easily build the second matrix.

[Tex/LaTex] How to make two 2×1 matrices in the same column

This requires some manual adjustment, but if you don't have too many of these butterflies, it might be sufficient:

\documentclass{article}
\usepackage{amsmath,xparse}

\ExplSyntaxOn
\RenewDocumentCommand{\vdots}{O{3}}
 {
  \vbox:n
   {
    \skip_set:Nn \baselineskip {4pt}
    \dim_set:Nn \lineskiplimit {0pt}
    \kern 6pt % no equivalent with expl3 at the moment
    \prg_replicate:nn { #1 } { \hbox:n { . } }
   }
 }
\ExplSyntaxOff

\begin{document}
\[
\begin{bmatrix}
0 \\ \vdots[16] \\ n
\end{bmatrix}
=
\begin{matrix}
\begin{bmatrix}
0 \\ \vdots \\ (n+1)/2
\end{bmatrix}
\\[4.7ex]
\begin{bmatrix}
0 \\ \vdots \\ (n+1)/2
\end{bmatrix}
\end{matrix}
\]
\end{document}

The new optional argument to \vdots tells how many dots are to be printed.

enter image description here

Best Answer

Related Solutions

[Tex/LaTex] Specific blockmatrices

[Tex/LaTex] How to make two 2×1 matrices in the same column

Related Question