Try:
\m{\overparent{}{AB}}
(See section 1 Math Stackers in about.pdf, in the distribution.)
Alan
On Thu, 27 Sep 2018 22:07:37 +0200
Fabrice Couvreur <fabrice1.couvr...@gmail.com> wrote:
> I just tested both solutions and that of Alan does not work as expected.
>
> \useMPlibrary[mat]
>
> \definemathstackers
> [mp]
> [alternative=mp]
>
> \definemathextensible [mp] [overparent] ["FE3DC]
>
> \starttext
> \m{\overparent{ AB}}
> \stoptext
>
>
>
> Le jeu. 27 sept. 2018 à 21:47, Fabrice Couvreur <fabrice1.couvr...@gmail.com>
> a écrit :
>
> > Hi Henri and Alan,
> > Thank you for your answers.
> > Fabrice
> >
> > Le mer. 26 sept. 2018 à 23:52, Alan Braslau <braslau.l...@comcast.net> a
> > écrit :
> >
> >> On Thu, 27 Sep 2018 09:22:00 +1200
> >> Henri Menke <henrime...@gmail.com> wrote:
> >>
> >> > On 27/09/18 09:15, Fabrice Couvreur wrote:
> >> > > Hello,
> >> > > How to improve the notation of an arc ?
> >> > > Thank you
> >> > > Fabrice
> >> > >
> >> >
> >> > Use the correct math fence
> >> >
> >> > \starttext
> >> > \m{\overparent{\rm AB}}
> >> > \stoptext
> >> >
> >> > > \starttext
> >> > > \m{\overset{\frown}{\rm AB}}
> >> > > \stoptext
> >>
> >> And, if you prefer, you can use MetaPost (rather than the font
> >> extensible):
> >>
> >> \useMPlibrary[mat]
> >>
> >> \definemathstackers
> >> [mp]
> >> [alternative=mp]
> >>
> >> \definemathextensible [mp] [overparent] ["FE3DC]
> >>
> >>
> >> Alan
> >>
> >> ___________________________________________________________________________________
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> >>
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> >>
> >
> >
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