From: Christoph LANGE <ch.lange@jacobs-university.de>

Date: Fri, 24 Jul 2009 15:24:46 +0200

To: Urs Holzer <urs@andonyar.com>

Cc: "www-math@w3.org" <www-math@w3.org>

Message-Id: <200907241524.48325.ch.lange@jacobs-university.de>

Date: Fri, 24 Jul 2009 15:24:46 +0200

To: Urs Holzer <urs@andonyar.com>

Cc: "www-math@w3.org" <www-math@w3.org>

Message-Id: <200907241524.48325.ch.lange@jacobs-university.de>

Hi Urs, 2009-07-24 11:41 Urs Holzer <urs@andonyar.com>: > I have to implement the following in my Presentation MathML editor: When > the user inserts a unicode character, the editor has to guess which > token element to use, mi or mo. So, the question is: How to find a sane > default token element for a given unicode character? In the very general case, you don't always get a unique answer, as functions can also occur as constants, i.e. without arguments. E.g. instead of sin x or sin(x) you'd have statements like "let f = sin, then f(x) = ...", or "the [function] vector space spanned by the set {sin, cos}". I'm sure this is also true for certain function symbols that have their own Unicode characters. But actually it might not make a difference for you, as * it is possibly admissible to write function constants as <mo> as well (@all: is it?) * functions applied to arguments occur much more frequently than function constants Cheers, Christoph -- Christoph Lange, Jacobs Univ. Bremen, http://kwarc.info/clange, Skype duke4701Received on Friday, 24 July 2009 13:25:43 UTC

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