Okay, so I'm trying to make this sort of a table:
---------------------------- | A | | & true false | | |--------------| | B | true | 1 1 | | | false | 2 3 | |--------------------------| and this is my code.
\begin{tabular}{|cccc|} \hline \multicolumn{2}{c}{\multirow{2}{*}{\&}} & & A & & true & false \multirow{2}{*}{B} & false & 0 & 1 \\ & true & 2 & 3 \\ \hline \end{tabular} Idk what I did wrong tbh. I'm finding this multirow, multicolumn stuff a little confusing...
Like this:
\documentclass{article} \usepackage{multirow} \begin{document} \begin{tabular}{cc|cc} & & \multicolumn{2}{c}{A} \\ \multicolumn{2}{c|}{\&} & true & false \\ \hline \multirow{2}{*}{B} & true & 1 & 1 \\ & false & 2 & 3 \end{tabular} \end{document} or this:
\documentclass{article} \usepackage{multirow} \begin{document} \begin{tabular}{cc|cc} \multicolumn{2}{c}{} & \multicolumn{2}{c}{A} \\ \multicolumn{2}{c|}{\&} & true & false \\ \hline \multirow{2}{*}{B} & true & 1 & 1 \\ & false & 2 & 3 \\ \end{tabular} \end{document} or this?
\documentclass{article} \usepackage{multirow} \begin{document} \begin{tabular}{|cc|cc|} \hline \multicolumn{2}{|c|}{} & \multicolumn{2}{c|}{A} \\ \multicolumn{2}{|c|}{\&}& true & false \\ \hline \multirow{2}{*}{B} & true & 1 & 1 \\ & false & 2 & 3 \\ \hline \end{tabular} \end{document} or finally (as described in your comment below):
\documentclass{article} \usepackage{multirow} \begin{document} \begin{tabular}{|c|c|cc|} \hline \multicolumn{2}{|c|}{} & \multicolumn{2}{c|}{A} \\ \cline{3-4} \multicolumn{2}{|c|}{\&}& true & false \\ \hline \multirow{2}{*}{B} & true & 1 & 1 \\ & false & 2 & 3 \\ \hline \end{tabular} \end{document} to my taste, I would choose the first example ...
Here is a way to do that table with {NiceTabular} of nicematrix.
\documentclass{article} \usepackage{nicematrix} \begin{document} \begin{NiceTabular}{|c|c|cc|} \Hline \Block{2-2}{} & & \Block{1-2}{A} \\ \Hline \Block{1-2}{\&} & & true & false \\ \Hline \Block{2-1}{B} & true & 1 & 1 \\ & false & 2 & 3 \\ \Hline \end{NiceTabular} \end{document} 
