# How to type this diagram in Latex

I am a new latex user and I have no idea how to draw this diagram in latex. Can anyone help me? Thank you in advance

• What have you done so far? Jul 16, 2016 at 17:30
• I can draw the diagram in each line but I have no idea to draw the downward "=" and the down arrow Jul 16, 2016 at 17:49
• \rotatebox{-90}{$\rightarrow$} + some adjustment, for instance. Otherwise with tikz-cd or psmatrix (from pst-node). Jul 16, 2016 at 17:54
• Possible duplicate? tex.stackexchange.com/q/115783/15036 Jul 16, 2016 at 18:02
• The post @Thruston mentioned, should help you. There also good examples at texample.net: texample.net/tikz/examples/commutative-diagram-tikz Jul 16, 2016 at 18:04

Possible solution with tikz-cd as been suggested in the comments.

\documentclass[tikz]{standalone}
\usepackage{tikz-cd}
\usepackage{amsmath}
\begin{document}

\begin{tikzcd}
y  \ar{r}{(E)} & v(y) \ar{r}{(T)} & T_{s}(v(y)) \ar{r} & \min\limits_{s \in S} T_{s}(v(y))\\
y^{*} \ar[equal]{d} \ar{r}{(E)} & v(y) \ar{r}{(T)} & T_{s}(v(y^{*})) \ar{d} \\
(y_{s})_{s \in S} \ar{r} {y^{*}_{s} > 0}& y^{*}_{s} \ar[equal]{r} & \min\limits_{s \in S}T_{s}(v(y^{*})) &
\end{tikzcd}

\end{document}


• But I can not get the equal "=", it turns out "---". I use beamer. Jul 16, 2016 at 22:05
• Please ask an independent question regarding the problem you're facing plus the code that generates the problem. Jul 16, 2016 at 22:17