3
votes
1answer
77 views

Does not imply arrow in \xymatrix?

I am wondering how to make a does not imply arrow when using \xymatrix. I have a square diagram with two implications (arrows) on three edges only and one arrow on the fourth edge. One of the arrows ...
6
votes
2answers
106 views

Punctuation after multiline math diagram

How to place the punctuation after multiline math diagram at the last line rather than the first line as the case showed in my following code. \documentclass{article} \usepackage[utf8]{inputenc} ...
9
votes
3answers
3k views

Commutative diagram with rounded arrows

I want to draw a diagram which has some arrows between to points A and B. First arrow goes straight from A to B and above it should be a $\Psi$. Second arrow goes in a round way from A to B and above ...
2
votes
3answers
1k views

Adding arrows to each term of an equation

\documentclass{beamer} \usepackage[all]{xy} \begin{document} \section{Introduction} \xymatrix{ &*+{\sum_{i=n}^m {i^2}} &*+{+}&*+{p} \\ & {\bullet} & D \ar[ul] && f \ar[ul] ...
10
votes
3answers
2k views

Pushouts and pullbacks

How do I typeset that little symbol which indicates that a commutative square is a pushout or pullback square? I usually draw my diagrams in XY-pic, so I'd be most interested in how to do it there. ...