# Is it possible to draw a diagonal arrow in a commutative diagram?

I have read the question How to draw a commutative diagram? but as far as I'm aware, the amscd package doesn't have a way to draw diagonal arrows. Is there some other package we can use to draw commutative diagrams with diagonal arrows?

• I use the xymatrix package (tutorial by Milne here). It's very well-behaved. – user98602 Jun 11 '14 at 2:48
• @MikeMiller: Can you use it on MSE? – Michael Albanese Jun 11 '14 at 2:48
• No idea! Never tried. Let me test. – user98602 Jun 11 '14 at 2:48
• Update: nope!${}$ – user98602 Jun 11 '14 at 2:58
• Have you seen Zev's answer to that question? It's best one can do at the moment, I'm afraid... – Grigory M Jun 11 '14 at 6:03
• ProofWiki uses the XyJax extension for MathJax. Unfortunately, it appears to be out of active maintenance. – punctured dusk Aug 2 '17 at 12:13