I would like to type, with LyX, a vertical arrow directed to the equality sign and with (x>0) at the bottom, as described below:
|x| = x ^ | (x>0)
Could somebody here please help me?
copy and paste this into LyX, then mark it with the cursor and then ctrl-m, which should convert it into math. Maybe that this causes and error, when LyX tries to convert it in the right way. Then insert it by hand.
\[ |x| \underset{\makebox[0pt]{$\substack{\uparrow\\(x>0)}$}}{=} x \]
Herbert
