> Mari Voipio <mailto:mari.voipio@iki.fi>
> 8. September 2015 13:40
> Hello!
>
> I recently had to reformat a document that contains mathematical
> notation and I was surprised how easy it was once I got the hang of
> it. There's only one tiny problem:
>
> I have one equation inserted with \placeformula. Currently this
> formula gets numbered as equation 2.1 as it is in chapter two. I would
> prefer it to be called just (1) instead of (2.1).
>
> The display math page at <http://wiki.contextgarden.net/Math/Display>
> says to use \setupnumber[formula][way=bysection] to get formulas
> numbered by section, but there are no hints on numbering the formulas
> with a running number independent of the section numbering.
You can disable the chapter, section etc. number with the "prefix=no" 
setting
but you should also add "way=bytext" because the prefix setting won't stop
context from resetting the counter with each new chapter, or section.

%% begin example
\setupformula[prefix=no]

\starttext

\chapter{Chapter}

\placeformula
\startformula
1 + 2 = 3
\stopformula

\stoptext
%% end example

Wolfgang