From: Lucian Smith <lucianoelsmitho@gmail.com>

Date: Tue, 29 Apr 2014 15:58:56 -0700

Message-ID: <CAHLmBr16ksM+MEGOEDTtM7oqwO2+Xbgo_+ebUJaE5cgx7N3HPA@mail.gmail.com>

To: www-math@w3.org

Date: Tue, 29 Apr 2014 15:58:56 -0700

Message-ID: <CAHLmBr16ksM+MEGOEDTtM7oqwO2+Xbgo_+ebUJaE5cgx7N3HPA@mail.gmail.com>

To: www-math@w3.org

Hello! Hopefully, this is the right forum to ask this question; if not, I apologize. We are using MathML within our own XML-based format, and are about to introduce the concept of sets to our identifiers--basically, in the past an identifier always meant 'a double' and now it might mean 'a set of doubles'. If it is legal, we would like to recommend that people use the following simple format to indicate 'the sum of all values in a set': <apply> <sum/> <ci type="set"> Si </ci> </apply> or even just: <apply> <sum/> <ci> Si </ci> </apply> since 'Si' would already be known to the interpreter to be a set. However, I did find a more formal definition at http://zvon.org/xxl/MathML/Output/el_sum.html which, if applied to this same use-case, would look like: <apply> <sum/> <bvar> <ci> s </ci> </bvar> <condition> <apply> <in/> <ci> s </ci> <ci type="set"> Si </ci> </apply> </condition> <ci> s </ci> </apply> Are both options legal? Are there other options? Are there aspects of this I haven't covered? Thank you! -Lucian SmithReceived on Wednesday, 30 April 2014 09:38:23 UTC

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