From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: math: too big space between function and argument
Date: Wed, 25 May 2011 11:54:32 -0400 (EDT) [thread overview]
Message-ID: <alpine.LNX.2.02.1105251149240.4150@ybpnyubfg.ybpnyqbznva> (raw)
In-Reply-To: <1306331537.10056.72.camel@mattotaupa>
On Wed, 25 May 2011, Paul Menzel wrote:
> On Di, 2011-05-24 at 09:56 -0400, Aditya Mahajan wrote:
>> On Tue, 24 May 2011, Paul Menzel wrote:
>
>>> to markup the probability measure and the parenthesis around the
>>> argument, I defined the following command.
>>>
>>> \define[1]\P{{\mathbf P}\left( #1 \right)}
>>>
>>> Unfortunately the space between the P and the left ( is a little big in
>>> my opinion. Is that correct or should/can I fix that somehow?
>>
>> Getting these spaces is tricky; especially if you consider spaces before
>> and after the definition. Choose your pick:
>>
>> \starttext
>> \startformula
>> A{\mathbf P}\left( ABC \right)B \quad
>> A\mathop{\kern\zeropoint\mathbf P}\left( ABC \right)B \quad
>> A{\mathbf P}\mathopen{}\left( ABC \right)\mathclose{}B \quad
>> A\mathop{\kern\zeropoint\mathbf P}\mathopen{}\left( ABC \right)\mathclose{}B \quad
>> \stopformula
>> \stoptext
>
> That looks tricky and complex.
But can be easily hidden behind a macro.
> Could you explain the advantage over `\!` which Wolfgang suggested at
> least for the space after the definition.
\! only corrects the space between the P and (, not the spacing before P,
and the space after ). Moreover, some of the math spacing rules change in
\scriptstyle and \scriptscriptstyle; using \mathop, \mathopen, and
\mathclose means that those rules are followed.
> In addition, I think AMSTeX defines a command `\DeclareMathOperator` [1]
> which takes care of these things
No. \DeclareMathOperator is just a fancy wrapper around
\mathop{\operatorfont ...}. A similar result can be achieved in ConTeXt
using
\declaremathcommand [...] [op] [\mfunction ...]
For defining user macros, I prefer \mathop{\mfunction{...}}.
Aditya
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prev parent reply other threads:[~2011-05-25 15:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-24 11:14 Paul Menzel
2011-05-24 13:25 ` Wolfgang Schuster
2011-05-25 13:46 ` Why is `\P` used for not often used ¶? (was: math: too big space between function and argument) Paul Menzel
2011-05-25 14:27 ` Wolfgang Schuster
2011-05-24 13:56 ` math: too big space between function and argument Aditya Mahajan
2011-05-25 13:52 ` Paul Menzel
2011-05-25 15:54 ` Aditya Mahajan [this message]
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