From: <juanrgonzaleza@canonicalscience.com>

Date: Sat, 23 Dec 2006 04:41:54 -0800 (PST)

Message-ID: <3231.217.124.88.254.1166877714.squirrel@webmail.canonicalscience.com>

To: <www-math@w3.org>

Date: Sat, 23 Dec 2006 04:41:54 -0800 (PST)

Message-ID: <3231.217.124.88.254.1166877714.squirrel@webmail.canonicalscience.com>

To: <www-math@w3.org>

William F Hammond said: <juanrgonzaleza@canonicalscience.com> writes: > 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. ó was <oacute/> and next defined via > Schema (no DTD). > I don't see oacute as a math symbol; it's just another letter. I was simply noticing there exists interest to reemplace entities outside of MathML too. Schemas use way i said instead current DTD entities. > In my experience one usually says "4 pi" rather than "4 times pi". As said standard reading of math is "4" "times" "pi". "4" "pi" is acceptable iff you know both 4 and pi are, but "f" "x" is ambiguous. What does I mean by (K x y) = x? > Are you saying that mathml-capable aural user agents commonly do not > make a distinction between > > <mi>x</mi><mi>y</mi> and <mi>xy</mi> ? I think that i was saying that cannot differentiate <mi>x</mi><mi>y</mi> from <mi>x</mi><mi>y</mi> > Perhaps a lame aural agent might fail in this regard. But, on the > other side, a lame visual agent might also fail by inserting an > unknown symbol indicator for <mo>&invisibleTimes;</mo>. (There is a > history of this.) Because problems with non-numerical entities or with the Unicode character itself? > Also the invisible times can be useful for automatic linebreaking. > But doesn't it bind rather tightly? Enough for the cuadratic formula [1]. > As an author if I think the context for using <mi>x</mi><mi>y</mi> > might not be sufficient to imply invisibleTimes, then I will use > something explicit like \cdot. But authors on the web would write for others –including machines– not for themselves. I do not can see how you will avoid ambiguities on your files. [1] http://www.w3.org/TR/MathML/chapter2.html#fund.presReceived on Saturday, 23 December 2006 12:42:02 GMT

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