Re: [NTG-context] \triangledown placed too low in Palatino

13 Apr 2014

      On 4/13/2014 4:44 AM, Sanjoy Mahajan wrote:
...
Otared Kavian  writes:
...
The \triangle operator is used for instance in the « symmetric
difference » of two subsets
Ah, good to learn something about pure mathematics.  In my mathematics
degree, my tutor said, "You are very good at the applied material,"
which was not meant as a compliment.
So \triangle should be a \mathop rather than a \mathord?  Right now, as
Aditya pointed out, it's a \mathord ("ordinary"), in contrast to
\bigtriangleup, which is the same character but typeset as a binary
operator ("binary"). From char-def.lua :
[0x25B3]={
   adobename="whiteuppointingtriangle",
   category="so",
   cjkwd="a",
   description="WHITE UP-POINTING TRIANGLE",
   direction="on",
   linebreak="ai",
   mathspec={
    {
     class="ordinary",
     name="triangle",
    },
    {
     class="binary",
     name="bigtriangleup",
    },
   },
   unicodeslot=0x25B3,
  },
I can change things but will only do that when all you mathematicians 
have some agreement about it ...

Btw, it is still on my agenda to provide a mechanism for switching 
between math dictionaries (i.e. group symbols in group swith i fneeded 
different properties) so that one can switch between logic, statistics, 
streetfighting or whatever math.

Hans

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