\documentclass{standalone}
\usepackage{tikz}
\begin{document}
\[	
	T = \byt  \none & \none & 1 & 4 & 6 & 8 \\ \none & 3 & 5 & 9  \\ 2 & 7 \eyt
	\imp
    \Rect(T) = \byt 1 & 3 & 4 & 6 & 8 \\ 2 & 5 & 9 \\ 7 \eyt	
\]

\end{document}
