On Fri, Nov 07, 2003 at 04:58:08PM +0100, Andre Poenitz wrote: > On Fri, Nov 07, 2003 at 04:55:46PM +0100, Samuel Hammer wrote: > > Hi > > does anyone know how to center an index under an reaction arrow ? > > Whatever a reaction arrow is. > > Something like $a\underset{x}{\to}b$ ?
Instead of the above, \xrightarrow[x]{} should be used. In LyX, it is entered as \xrightarrow and then space (also, the 'Use AMS' button in the document dialog should be enabled).