From: Hans Aberg (firstname.lastname@example.org)
Date: Wed Apr 13 2011 - 10:29:54 CDT
On 13 Apr 2011, at 16:42, Julian Bradfield wrote:
>>> Bold italic has been used for quite a long time.
>> I think it had been not used but not very common in the days of led
> I'd agree it was not very common. If I recall, it was about when I was
> at school that the use of bold italic for vector variables became a
> normative standard.
One might typeset variables in italic, constants in upright, so bold italic would be there in support of that. In the older past, one might substitute upright bold.
>>>> So that was the rationale for not adding the Calligraphic style, as
>>>> it was thought of a variation of the Script style, one would normally
>>>> use when available. That is, math text would not use them
>>>> side-by-side even though in principle they could do it.
>>> But math text does use the two side by side with different meanings.
>>> (third line of the abstract)
>>> for a concrete example by working mathematicians.
>> Another question would be if it is necessary for expressing the
>> semantics of the paper, that is, their usage is so locked down that
>> it would be hard to not rewrite it.
> That, if I may say so, is a rather silly question, and also
> irrelevant. It's silly because no one mathematical notation is
> necessary - there's always another way to do it. For example, in
> school texts, and even in some monographs, you may see "bold" letters
> marked with the manuscript sign of under-tilde, instead of or as well
> as actually being bold. It's irrelevant, because it is not the
> business of Unicode to tell mathematicians what they should or should
> not do, any more than it is the business of Unicode to tell Swedes
> that they can just write "aa" instead of "å", or Germans that they can
> just write "ae" instead of "ä".
So do you want to add every math style used now and in the future, in effect, every font ever used, as a new semantic style in Unicode? That is not practical.
If not, what principle would restrict it?
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