1. ## Ugly diagram

I posting this question in a recent thread but I thought I'd back it up here. Here's the pdf. Look at diagram (1.2) at the bottom of the first page. How do you code the diagram in LaTeX?

Thanks!

-Dan

2. ## Re: Ugly diagram

One of my reference books mentions a commutative diagram package called amscd, for what it's worth. I don't do usenet any more, but you could probably get a prompt and helpful reply there in one of the TeX groups.
Also you might look here: https://tex.stackexchange.com/questi...grams-in-latex

3. ## Re: Ugly diagram

There are various drawing packages available. Tikz seems popular.