On 2017-02-24, Bernt Lie wrote:
> From: lyx-users@lists.lyx.org [mailto:lyx-users@lists.lyx.org] On Behalf Of
> Jean-Marc Lasgouttes
> Le 24/02/2017 à 16:07, Bernt Lie a écrit :
>> I need to typeset the signum function as an operator. I have tried to
>> insert "\mathop{sgn}", but this gives "sgn" in italic, and not in
>> roman as it should.
> The right command is operatorname, I think. LyX is not yet able to
> display it properly , though.
You can define a math-macro with \operatorname{sgn} in the TeX definition
and sgn in upright roman font in the LyX definition.
Günter
