Paul A. Rubin wrote:
> What document class? I just tried the article class, and fractions in
> display mode appeared (in the DVI) in display style. In fact, I tried
>
> \[\frac{a}{b}=\dfrac{a}{b}={\displaystyle \frac{a}{b}}\]
>
> (using LyX math insets, not ERT) and got a formula with three identical
> fractions.
> Article class, but lyx 1.4.5 \[ is marked as 'bad math environment delimiter' in 1.4 so i cannot check your test -- Pol
