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RE: Contributing to MathML 3 ?

From: Robert Miner <robertm@dessci.com>
Date: Wed, 16 May 2007 13:55:40 -0700
Message-ID: <D1EFB337111B674B8F1BE155B01C6DD601DBF772@franklin.corp.dessci>
To: "Max Berger" <max@berger.name>
Cc: <www-math@w3.org>, <jeuclid-devel@lists.sourceforge.net>

Thanks Max,

It'll take me a bit to go through all the points you list here, but I
wanted to quickly respond to

> And, last but not least, a comment on <mu>:
> What would be the exact difference of rendering <mu> and <mtext>?

None, as far as I can see.  That is the major reason for not adding a
<mu> tag.  It's only purpose would really be semantic, to identify its
contents as a unit.  But as we are talking about presentation MathML, I
don't see that as a strong justification.  This is the same line of
reasoning that lead the authors of the Units in MathML Note to suggest
indicating units with a class attribute.  The Note suggests using <mi
mathvariant="normal"> since units function as identifiers.  But of
course, it is also perfectly valid to use <mtext> in which case the
mathvariant is unnecessary.


Robert Miner
Director, New Product Development
W3C Math WG co-chair

Design Science, Inc.
140 Pine Avenue, 4th Floor
Long Beach, California  90802
Tel:  (651) 223-2883
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> -----Original Message-----
> From: Max Berger [mailto:berger.max@gmail.com] On Behalf Of Max Berger
> Sent: Wednesday, May 16, 2007 3:21 PM
> To: Robert Miner
> Cc: www-math@w3.org; jeuclid-devel@lists.sourceforge.net
> Subject: Re: Contributing to MathML 3 ?
> Dear Robert,
> Am 16.05.2007 um 16:43 schrieb Robert Miner:
> > Do you have a short list of issues for MathML 3 coming out of your
> > JEuclid work?
> So far only a few issued related directly to the the 2.0 spec, but as
> the 3.0 spec is based largely on it, here they are. I will have to
> look into the 3.0 spec into more detail before I can give reasonable
> feedback.
> Mo:
> by default, operators have a thickmathspace around them. This is ok,
> other than in situations where they have prescripts (mo is base in an
> mmultiscript) or postscripts (msub, msup, msubsuper, munderover with
> limits moved). In this case, there should be no space between the
> operator and its scripts, as this looks very strange.
> Ms:
> lquote and rquote are both "strings". However, in the context of
> escaping them it only makes sense for them to be "characters"
> Mstyle/Scriptminsize:
> by default is is 8pt. However, there are no other default font sizes.
> Assuming the default size was thought to be 12pt, maybe this should
> be mainfontSize / 3 * 2 instead?
> Menclose:
> What is the point of menclose notation "radical", as it is equivalent
> to "msqrt" ? I think it should be deprecated.
> Mmultiscript:
> introduces the new "none" element, which is handled / described
> nowhere else. Why not just use mspace, or an empty mi / mn / ...
> element?
> The Testsuite:
> Some of the .mml files from the testuite (as downloaded from) http://
> www.w3.org/Math/testsuite/testsuite.zip are not valid MathML
> documents. Some still contain MathML 1 markup, others are not even
> loading using a standard XML parser.  Some example renderings are
> wrong. But I will have to report on this in a separate mail.
> The Java DOM Binding:
> downloaded from http://www.w3.org/Math/DOM/mathml2/mathml-
> dom_java.zip does not match the spec. It is apparently from the 1st
> edition of the MathML spec. Also, it lacks documentation. I have
> written an xslt-script to generate "proper" DOM interfaces, it is
> available at:
> http://jeuclid.svn.sourceforge.net/svnroot/jeuclid/trunk/jeuclid-core/
> generate-interfaces/
> and I would be very much volunteering to "donate" it to receive a
> better usable standard Java DOM binding.
> And, last but not least, a comment on <mu>:
> What would be the exact difference of rendering <mu> and <mtext>?
> > Robert
> Max Berger
> e-mail: max@berger.name
> --
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> max.berger.name
Received on Wednesday, 16 May 2007 20:56:19 GMT

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