From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Sanjoy Mahajan <sanjoy@MIT.EDU>
Subject: Re: \triangledown placed too low in Palatino
Date: Fri, 11 Apr 2014 00:12:05 -0400 (EDT) [thread overview]
Message-ID: <alpine.DEB.2.02.1404110011030.17758@nqv-guvaxcnq> (raw)
In-Reply-To: <alpine.DEB.2.02.1404110008180.17758@nqv-guvaxcnq>
On Fri, 11 Apr 2014, Aditya Mahajan wrote:
> On Fri, 11 Apr 2014, Sanjoy Mahajan wrote:
>
>>> I cannot say whether the wrong placement is due to the wrong font
>>> metrics or the wrong mapping (mathop vs mathord) by ConTeXt.
>>
>> I tried '\triangle T' (often used as the Laplacian operator, instead of
>> writing it out as \nabla^2). That one comes out fine, even though
>> \triangledown does not. But they seem to have similar kinds of
>> defintions/mappings:
>>
>> From luatex-math.tex :
>>
>> \def\triangle {\Umathchar "0"0"0025B3 }
>> \def\triangledown {\Umathchar "2"0"0025BD }
>>
>> So it must be a wrong font metric?
>
> AFAIU, ConTeXt does not use luatex-math.tex. The mappings are defined in
> char-def.lua.
>
> triangle is defined as a mathord (like nabla) while bigtriangleup is a mathop
> (like triangledown).
Sorry, bigtriangleup is a mathbin. (As I said, I don't understand how the
mathclass of different triangle operators is determined).
Aditya
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next prev parent reply other threads:[~2014-04-11 4:12 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-10 21:49 Sanjoy Mahajan
2014-04-10 22:28 ` Jannik Voges
2014-04-11 0:28 ` Sanjoy Mahajan
2014-04-11 3:48 ` Aditya Mahajan
2014-04-11 4:06 ` Sanjoy Mahajan
2014-04-11 4:10 ` Aditya Mahajan
2014-04-11 4:12 ` Aditya Mahajan [this message]
2014-04-11 5:24 ` Mikael P. Sundqvist
2014-04-11 13:13 ` Otared Kavian
2014-04-13 2:44 ` Sanjoy Mahajan
2014-04-13 16:47 ` Hans Hagen
2014-04-14 9:30 ` Sanjoy Mahajan
2014-04-15 6:49 ` Hans Hagen
2014-04-15 12:12 ` Sanjoy Mahajan
2014-04-16 3:54 ` remove full stop after a title ending with punctuation Peng Zhang
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