控制表格单元格的大小

Question

如何控制下表中单元格的大小？

\documentclass{article}
    %\usepackage[utf8]{inputenc}
    %\usepackage{array}
    %\usepackage{wrapfig}
    %\usepackage{multirow}
    \usepackage{tabular}
        
    \usepackage{makecell}   
    \setcellgapes{7pt}
    
    \begin{document}
    
$\alpha$\quad
\begin{tabular}[t]{%
                   @{\rule[-1.5ex]{0pt}{4.5ex}}%
                   *{4}{>{\centering\arraybackslash}m{\dimexpr3ex-\tabcolsep}|}%
                  }
\multicolumn{1}{c}{}  & \multicolumn{1}{c}{$i$} & \multicolumn{1}{c}{$j$} & \multicolumn{1}{c}{$k$} \\
\cline{2-4}
$i$ &  T  &  F  &  T  \\
\cline{2-4}
$j$ &  T  &  F  &  T  \\
\cline{2-4}
$k$ &  F  &  T  &  F \\[-\arrayrulewidth]
\cline{2-4}
\end{tabular}  

    \end{document}

当我编译上述代码时，单元格并不像下面的图片那么小（正如我希望的那样）：

Answer 1

和nicematrix。

\documentclass{article}
\usepackage{nicematrix}

\begin{document}

\NiceMatrixOptions{cell-space-top-limit=2mm,cell-space-bottom-limit=1.5mm}

$B$\quad \begin{NiceTabular}[baseline=0]{ccc}%
  [first-row,first-col,hvlines, columns-width=3.5mm]
& $i$ & $j$ & $k$ \\
$i$ &  T  &  F  &  T  \\
$j$ &  T  &  F  &  T  \\
$k$ &  F  &  T  &  F \\
\end{NiceTabular}  

\end{document}

Answer 2

像那样？

\documentclass{article}
   \usepackage{array}
\begin{document}
\setlength{\tabcolsep}{2pt}
$\alpha$\quad 
\begin{tabular}[t]{*{4}{c|}}
 \multicolumn{1}{c}{}  & \multicolumn{1}{c}{$i$} & \multicolumn{1}{c}{$j$} & \multicolumn{1}{c}{$k$} \\
\cline{2-4}
$i$ &  T  &  F  &  T  \\
\cline{2-4}
$j$ &  T  &  F  &  T  \\
\cline{2-4}
$k$ &  F  &  T  &  F \\
\cline{2-4}
\end{tabular}  
\end{document}

---

这也是使用 tikz 矩阵的侧视图。您可以使用选项、 和来控制单元格的高度和宽度以及字母和单元格边框之间的距离minimum height：minimum widthinner sep

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{matrix}

\begin{document}

\begin{tikzpicture}[cell/.style={rectangle,draw=black}, nodes in empty cells]
  \matrix(table)[
  matrix of nodes,
  row sep =-\pgflinewidth,
  column sep = -\pgflinewidth,
  nodes={anchor=center, 
         minimum width=0.4cm,
         minimum height=0.4cm, 
         fill=none, 
         draw=black, 
         inner sep=0pt},
  column 1/.style = {nodes={draw=none}},
  row 1/.style={nodes={draw=none}},
  ] 
  {    & $i$ & $j$ & $k$  \\
   $i$ & T   & F   & T    \\
   $j$ & T   & F   & T    \\
   $k$ & F   & T   & F    \\
  };
\end{tikzpicture}

\end{document}