Help:LaTeX Editing/Commutative Diagrams

A lot of effort has been put into implementing extensions for commutative diagrams. This page lists these and other

The xymatrix package
From Talk:Main Page/Archive 9 and Talk:Main Page/Archive_8

Some explanation will be added. For now, see the manual at http://www.jmilne.org/not/Mxymatrix.pdf

As an image
A last resort is to create an image and upload it. This is for example explained at https://meta.wikimedia.org/wiki/Help:Displaying_a_formula#Commutative_diagrams

This is disrecommended, as it does not allow other uses to easily make changes to the diagram.