W3C home > Mailing lists > Public > www-math@w3.org > December 2006

Re: Profiling and certificates for MathML. Avoiding imitators

From: <juanrgonzaleza@canonicalscience.com>
Date: Fri, 22 Dec 2006 00:43:02 -0800 (PST)
Message-ID: <3139.>
To: <www-math@w3.org>

William F Hammond said:

> Secondarily, the fact that things like &invisibleTimes and
> &applyFunction would be better handled (given the non-availability of
> SDATA) as empty elements.

In the first version of the input syntax for MathML i discussed here,
stuff as entitities was represented as empty elements. Not just for MathML
but also for XHTML. E.g. &oacute; was <oacute/> and next defined via
Schema (no DTD).

Now, i see interesting go away, substituting also numeric entitities
&#nnn; as <#nnn>. Unfortunately, i do not wait that kind of change for XML

> But I was speaking about presentation markup.

Well, i also. Justaposition for denoting times is popular for visual
rendering,  and handwritting maths.

In a visual representation, you just copy tokens and the times is mainly
redundant. But it is not for aural rendering. "4 times pi" is standard in
spoken mathematics. [4 * pi] is better than [4 pi].

Also the invisible times can be useful for automatic linebreaking.
Received on Friday, 22 December 2006 08:43:17 UTC

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