Math & Science ⇒ Result of '\overrightarrow' looks bad

[Koen De Naeghel]

Hi,

I have recently noticed that the arrow in my \overrightarrow command is larger than it is supposed to be. When I compile (MiKTeX 2.8):

Code: Select all

\documentclass{book}

\begin{document}
$\overrightarrow{abc}$
\end{document}

my output looks like

bad.png (6.44 KiB) Viewed 3741 times

but it is supposed to look like

good.png (2.63 KiB) Viewed 3741 times

It becomes annoying when I use capital letters, since then the arrow touches the letter itself. Then I get results like

badCapital.png (3.11 KiB) Viewed 3739 times

Anyone has advice how to fix this?

Thanks,
Koen

[shadgrind]

You've run into one of the problems with the default Computer Modern fonts. You can use the \vphantom command to get some extra vertical space for capital letters, but the arrow will still be too big. Other fonts don't have this problem. For example, you get better spacing and smaller arrow heads when using the fouriernc package:

arrowtest.png (6.76 KiB) Viewed 3733 times