Re: Adding a symbol to eqn

[Robert Goulding]

That is indeed what I used as a substitute. But it's not typographically
very nice for setting out geometrical proofs (which is what I'm doing),
where the three sides of the triangle should be of equal weight.

On Wed, Jun 23, 2021 at 4:12 PM Oliver Corff <oliver.corff@email.de> wrote:

> Hi Robert,
>
> is Delta \[*D] a feasible substitute for your case?
>
> Oliver.
>
>
> On 23/06/2021 22:06, Robert Goulding wrote:
> > I'm sure this is very easy, but I'm rusty on groff fonts, and I'm not
> sure
> > how to do it. I want to add the triangle symbol △ (U25b3) as an operator
> to
> > eqn. So, this is my document:
> >
> > .EQ
> > delim $$
> > define triangle 'type "operator" △'
> > .EN
> > .LP
> > In $triangle ABC$ there are three sides.
> >
> >
> >
> > When I run this through groff -ps -e -ms -k I get the message:
> >
> > warning: can't find special character 'u25B3'
> >
> > which I was kind of expecting. But is there any easy way to point
> > grops towards the definition of U25B3?
> >
> > Robert.
> >
> > Robert Goulding
> > Sent from my Google Pixel 4
>
>

-- 
Robert Goulding
Director, John J. Reilly Center for Science, Technology, and Values;
Director, Program in History and Philosophy of Science;
Assoc. Professor, Program of Liberal Studies,
Fellow, Medieval Institute,
University of Notre Dame.