Can someone help me to draw a horizontal parallel arrows as a co-equalizer diagram in tikz-cd?
An example of co-equalizer diagram is:
Thanks in advance!
Can someone help me to draw a horizontal parallel arrows as a co-equalizer diagram in tikz-cd?
An example of co-equalizer diagram is:
Thanks in advance!
You can go with tikz-cd
:
\documentclass{article}
\usepackage{tikz-cd}
\begin{document}
\[
\begin{tikzcd}
X \ar[r,shift left=.75ex,"f"]
\ar[r,shift right=.75ex,swap,"g"]
&
Y \ar[r,"q"] \ar[dr,swap,"q'"]
&
Q \ar[d,densely dotted]
\\
& & Q'
\end{tikzcd}
\]
\end{document}
Just for fun, a pstricks
solution:
\documentclass[pdf]{article}
\usepackage{pst-node}
\begin{document}
\[ \psset{arrows=->, arrowinset=0.25, linewidth=0.6pt, dash=3pt 2pt, nodesep=3pt, labelsep=2pt, colsep=1.2cm, rowsep=1cm}
\begin{psmatrix}
X & Y & Q \\%
& &Q\smash{'}
%%%
\ncline[offset = 0.6ex]{1,1}{1,2}\naput{f} \ncline[offset = -0.6ex]{1,1}{1,2}\nbput{g}
\ncline{1,2}{1,3}\nbput{q} \ncline{1,2}{2,3}\nbput{q'}
\ncline[linestyle=dashed]{1,3}{2,3}\nbput[npos=0.45]{u}
\end{psmatrix}
\]
\end{document}