> as far as I know, LyX doesn't know the dfrac macro. You can
> write into the preamble
>
> \usepackage{amsmath}
> \let\frac\dfrac
>
> then every frac is written as a \dfrac macro.Splendid! It works! Just being curious: your solution affects all fractions; is there some way of having the two types of fractions in the same document?
