Formula numbering and counter

Formula numbering and counter

[PIERRE LEDEVEDEC]

Hi,

I would like to change the numbering of several formulae as follows:

<mathematical expression>          (1.1)
<mathematical expression>          (1.2a)  % here is
<mathematical expression>          (1.2b)  % the problem
<mathematical expression>          (1.3)

I don't know how to access the formula counter for the English interface
 of ConTeXt. (I only know that it is \formulenummer for the Dutch one.)

Also, how do you control the counter incrementation to produce (1.2a),
(1.2b) and the jump to (1.3) as automatic as possible ? (I know that I 
have to use \eqalignno and &(<macroformulanumber>) for the generation of
 the number.)

Thank you in advance for your answers.

Regards,
Pierre.

Re: Formula numbering and counter

[Hans Hagen]

At 01:19 PM 3/17/2003 +0100, you wrote:
>Hi,
>
>I would like to change the numbering of several formulae as follows:
>
><mathematical expression>          (1.1)
><mathematical expression>          (1.2a)  % here is
><mathematical expression>          (1.2b)  % the problem
><mathematical expression>          (1.3)

\placeformula       \startformula a = b + c \stopformula
\placeformula{a}    \startformula a = b + c \stopformula
\placesubformula{b} \startformula a = b + c \stopformula
\placeformula       \startformula a = b + c \stopformula
\placesubformula{a} \startformula a = b + c \stopformula
\placesubformula{b} \startformula a = b + c \stopformula

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