113 / 2011 Commutative diagrams in LaTeX

Mathematicians have been using diagrams of objects and arrows to explain their work since at least 1945. Conventially, these are called commutative diagrams (even when they don't commute). You have a choice of tools for making commutative diagrams in LaTeX.

Take a look at :: http://www.jmilne.org/not/CDGuide.html