thousand separator space

thousand separator space

[Jan Willem Flamma via ntg-context]

Dear list,

Two silly short questions.

Why is there an additional space after the thousand separator in math mode?
And what can I do to get rid of the additional space?

\starttext
1,000

\blank

$1,000$

\stoptext

Kind regards,
Jan Willem Flamma
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : https://contextgarden.net
___________________________________________________________________________________

Re: thousand separator space

[Max Chernoff via ntg-context]

Hi Jan,


> Why is there an additional space after the thousand separator in math mode?

Because something like

   ${\mathbb N} = \{1,2,3,4,\dots\}$
   
would look quite bad without any space between the numbers.

(The technical reason is that commas have the math class \mathpunct,
meaning that TeX automatically adds a space after them. Adding the
braces converts it to \mathord, which doesn't add any spaces.)

> And what can I do to get rid of the additional space?

The TeXbook recommends that you wrap the comma in curly braces

   $x = 1{,}000$
   
but there's probably a ConTeXt \setupxxx command that would have the same
effect. 

Many European languages use the comma as a decimal separator, so I'd
generally recommend using a thinspace (\,) instead of a comma as a
thousands separator to avoid confusion. 

Thanks,
-- Max
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : https://contextgarden.net
___________________________________________________________________________________

Re: thousand separator space

[Henning Hraban Ramm via ntg-context]

Am 21.11.22 um 23:08 schrieb Max Chernoff via ntg-context:

> The TeXbook recommends that you wrap the comma in curly braces
> 
>     $x = 1{,}000$
>     
> but there's probably a ConTeXt \setupxxx command that would have the same
> effect.

Use \digits:
https://wiki.contextgarden.net/Command/digits

Hraban

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : https://contextgarden.net
___________________________________________________________________________________

Re: thousand separator space

[Jan Willem Flamma via ntg-context]

Thank you both.

On 22-11-2022 08:58, Henning Hraban Ramm via ntg-context wrote:
> Am 21.11.22 um 23:08 schrieb Max Chernoff via ntg-context:
>
>> The TeXbook recommends that you wrap the comma in curly braces
>>
>>     $x = 1{,}000$
>>     but there's probably a ConTeXt \setupxxx command that would have 
>> the same
>> effect.
>
> Use \digits:
> https://wiki.contextgarden.net/Command/digits
>
> Hraban
>
> ___________________________________________________________________________________ 
>
> If your question is of interest to others as well, please add an entry 
> to the Wiki!
>
> maillist : ntg-context@ntg.nl / 
> https://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : https://contextgarden.net
> ___________________________________________________________________________________ 
>

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : https://contextgarden.net
___________________________________________________________________________________