On Tue, 6 Oct 2009, Taco Hoekwater wrote:

> R. Bastian wrote:
>> On Tue, 6 Oct 2009 12:13:13 +0200
>> luigi scarso <luigi.scarso@gmail.com> scribit:
>> 
>>> On Tue, Oct 6, 2009 at 12:02 PM, R. Bastian <rbastian@free.fr> wrote:
>>> 
>>>> Hello,
>>>> 
>>>> i like the sansserif, 10 pt font. My texts are from time to time
>>>> scattered (? parsemées) with maths expressions (A_i etc).
>>>> 
>>>> How is it possible to get the sansserif font ?
>>>> 
>>>> (now i write A$_i$ but it is not at the best ...)
>>>> 
>>>> Thanks
>>>> 
>>>> Maybe
>>> \starttext A\low{i} \stoptext
>
> or $\ss A_i$ maybe?

or

\appendtoks \mathss \to \everydisplaymath

Hans, I also needed this recently (for a presentation). Does it make 
sense to have a

\setupmathematics[style=normal|italic|sans|bold|slanted|bolditalic|boldslanted|mono]

which sets the default style in everymathematics (instead of the current 
defualt of \mathdefault)

Aditya