On Tue, Jun 9, 2026, at 19:59, Martin J. Dürst wrote:
> I think Martin Thomson in an earlier mail asked about whether MathML
> would be able to represent any semantics. I think it's easy to say that
> that's not possible, because it's always possible that some
> Mathematician comes up with a new theory that isn't covered by MathML.
> But a quick look at e.g.
> https://www.w3.org/TR/MathML3/chapter4.html#contm.opel should convince
> the reader that a very wide range of Math is indeed covered.
As a practical matter, this presentation/content distinction is key. Most of
the tools we have, especially those that produce MathML from LaTeX, will
produce the presentation form. That diminishes the availability of semantics
significantly. As the examples show, <interval
closure="open-closed"><cn>0</cn><cn>1</cn></interval> carries useful semantics
that is less clear in <mfenced open="("
close="]"><mn>0</mn><mn>1</mn></mfenced>.
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