Hi Brian,

In a notebook cell, I enter and evaluate:

%latex
$M^\mathsf{T}$

and get back a slanted M and a very crisp, upright superscript T.  So
it can be done, but this is accomplished by running a full-blown
instance of TeX and creating a PNG graphic as output.  $M^{\sf T}$
looks to render identically.

I get the error you mention when I add $M^\mathsf{T}$ via the TinyMCE
editor (shift-click on a blue bar).  I think this gets interpreted by
jsMath, so any fonts will come from jsMath.  From here I'm not sure
how to proceed, but maybe this will be enough for somebody else to
show the way forward.

Rob


On May 11, 4:36 pm, Brian Hawkins <hawkins.br...@gmail.com> wrote:
> Hi,
>
> First I'd like to say that I'm new to sage, I like it very much so
> far, and I am excited by its potential.  The attention to
> documentation is especially nice.
>
> I currently have an issue with sans serif fonts in latex math entered
> in the notebook interface.  Specifically I'm trying to get a nice-
> looking transpose operator with something like $M^\mathsf{T}$ or
> similarly $M^{\sf T}$.  In the notebook display I get the error,
> "Unknown control sequence '\sf'."  The \bf (bold) and \rm (Roman)
> macros work fine, though.  Is there any way to get \sf working?
>
> I'm on a Mac OS X 10.5.6 with sage 3.4.1.  I followed the instructions
> in the FAQ to install TeX .ttf fonts with no joy.
>
> Thanks,
> Brian
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