1

enter image description here

How to draw this comutative diagrams in LaTeX

Monalisa Aparaschivei
  • 11

2 Answers2

4

Check the Matrix library example here: http://www.texample.net/tikz/examples/commutative-diagram-tikz/

\documentclass[tikz]{standalone}
\usetikzlibrary{matrix}
\begin{document}
\begin{tikzpicture}
\matrix (m) [matrix of math nodes,row sep=3em,column sep=4em,minimum width=2em]
{
 A & B \\
 A/ker f & f(A) \\};
   \path[-stealth]
(m-1-1) edge node [left] {$p_{ker f}$} (m-2-1)
        edge node [above] {$f$} (m-1-2)
(m-2-2) edge node [right] {$i$} (m-1-2)
(m-2-1) edge [dashed] node [above] {$\bar{f}$} (m-2-2);
\end{tikzpicture}
\end{document}

enter image description here

Rodrigo
  • 567
3

It is a job for tikz-cd. This is a quick proposal

\documentclass{standalone}
\usepackage{tikz-cd}
\begin{document}
\begin{tikzcd}
A \arrow[r,"f"]\arrow{d}[left]{p_{\ker f}} & B \\
A/\ker f \arrow[r,"\bar{f}",dashed] & f(A) \arrow{u}[right]{i}
\end{tikzcd}
\end{document}

enter image description here

  • instead dashrightarrow is sufficient dashed. – Zarko Apr 19 '19 at 18:41
  • @Zarko Thanks for that. I was just searching in the manual about a dashed arrow, and came to dashrightarrow. I wasn't thinking probably –  Apr 20 '19 at 02:00