- From: David Carlisle <davidc@nag.co.uk>
- Date: Mon, 27 Nov 2006 11:24:53 GMT
- To: juanrgonzaleza@canonicalscience.com
- Cc: www-math@w3.org
> Just by curiosity. There exists another online validator (from a famous > CAS) that approves > > <math xmlns='http://www.w3.org/1998/Math/MathML'> > <apply> > <mo>≫</mo> <!-- put entity for the operator here --> > <ci>x</ci> > <cn>0</cn> > </apply> > </math> > > as valid MathML. yes as I said, in my corrected messgage, the dtd won't flag this as an error by default so it is valid in the technical definition of valid as defined by XML. That doesn't mean however that it isn't an error as MathML. http://www.w3.org/TR/MathML/appendixa.html says ... and partly due to the fact that for reasons of compatibility with earlier releases, the DTD is intentionally forgiving in some places and does not enforce constraints that are specified in the text of this specification. A few paragraphs further down http://www.w3.org/TR/MathML/appendixa.html#parsing.dtd.strict it does explain how the DTD can be made to check some additional things, including this. David
Received on Monday, 27 November 2006 11:25:08 UTC