Take the 2-minute tour ×
TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. It's 100% free, no registration required.

In \xymatrix, the command
\ar@{}[dr] |{\text{lab}}
typesets an empty arrow, broken by some text. Similarly, the command
\ar@/^10pt/ @{->}[ur] |{\text{lab}}
typesets a curving arrow, broken by some text. I would expect
\ar@/^10pt/ @{}[ur] |{\text{lab}}
then to typset a curving, empty arrow, broken by some text, but it doesn't. Is there a convenient way to achieve curving, empty, broken?

Here is a minimal example:

\documentclass{amsart}  
\usepackage[all]{xy}  
\begin{document}  
\begin{equation}  
\xymatrix{  
a \ar@/^10pt/ @{}[r] |{\text{lab}} & b  
}  
\end{equation}  
\end{document}
share|improve this question

1 Answer 1

up vote 2 down vote accepted

I don't know why this happens, but replacing \ar@{} by \ar@{{ }{ }} or \ar@{ { }} works. But \ar@{{ } } does not :). A minimal working example:

\documentclass{amsart}
\usepackage[all]{xy}
\begin{document}
\xymatrix{a \ar @{{ }{ }} @/^10pt/ [r] |{\text{lab}} & b}
\end{document}

If someone knows why this happens, edit me. My guess is that being more explicit to xy helps it.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.