Hi Xan,

Thanks to your example and Aditya's explanantion I learned too…
Here is how you can get what you want:

%%% begin example

\defineenumeration[lemma]%
        [text={Lemma},
        headstyle=bold,
        between=\blank,
        titledistance=0em,
        textdistance=1em,
        stopper={.\space},
        location=serried,
        left={\bgroup\bf},
        right={\egroup},
        width=fit,
        style=italic,
        title=yes,
        titledistance=.3em,
        titlestyle=sc] % or italic, or whatever you like


\starttext

\startlemma[reference]{ A brilliant result}
If $a=2$ then the set $H(a)$ is not empty.
\stoplemma

\stoptext

%%% end example


Best regards: OK

On 29 mai 09, at 21:52, Xan wrote:

En/na Xan ha escrit:
En/na Xan ha escrit:
On Fri, 29 May 2009, Xan wrote:

>/ Hi,
/>/
/>/ I have my environment of context that defines the theorems and lemmas like />/ amsthm in latex. For example, for lemmas, I have:
/>/
/>/ \defineenumeration
/>/ [lemma]
/>/ [text={Lemma},headstyle=bold,between= \blank,titledistance=0em,textdistance=1em, />/ stopper={.\space},location=serried,left={\bgroup \bf},right={\egroup},width=fit,style=italic]
/>/
/>/ The question is how can I get the typical argument of lemmas: "Lema 4.1 />/ (superadditive lemma)"? How can I add the possibility that lemma _could_ have />/ one argument (the phrase in parentesis)?.
/>/ I'm not a TeX programmer, such a ConTeXt user.
/>/
/>/ Any hint?
/
Use [title=yes] and then

\startlemma[reference]{A brilliant result}
...
\stoplemma



But if I do that, there is no space between the parentesis and number (like "Theorem 4.1(My great result)" and the parentesis and the contents of the parentesis are in bold. How can I solve that?

Mmm... with \titledistance I have to put space between () and numbers. But what is the dimensions of one space? 1em?

Now it remains only the bold topic.
Thanks a lot,
Xan.


For details, see my article in last year's MAPS.

Theorems in ConTeXt (English), MAPS 36, 2008, 27-32
(http://www.ntg.nl/maps/36/index.html)

Unfortunately, the issue is not available online yet.

Aditya

Yes, I tried to download it previosly (because I think it's missing documentation about something equivalent of amsthm in context) and I get that.... Can you give me it privately?

Regards, a lot,
Xan.



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