On 2017-01-04, Patrick Dupre wrote: > Hello, > If I use \mathscr > in a document, then lyx use the package > \usepackage{mathrsfs} > However, mathrsfs conflicts with
> \DeclareMathAlphabet{\mathscr}{FMS}{futm}{m}{n}% > \DeclareMathAlphabet{\mathcal}{OMS}{cmr}{m}{n}% > while I do not need mathrsfs > I use fourier Do you use "fourier" via Document>Settings>Fonts>Math or the user preamble? Günter