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**To**:*math-font-discuss@cogs.susx.ac.uk***Subject**:**Mathematica symbols****From**:*Ulrik Vieth <vieth@thphy.uni-duesseldorf.de>***Date**: Wed, 22 Oct 1997 14:00:08 +0200

During the last few days, I've been further investigating the Mathematica symbols fonts and I've been working on a mathptm-like implementation of the old math font encodings to get a better view of what is actually available for use in the new font encodings. While reading the section about "Mathematical and Other Notation" in the Mathematica 3.0 online manual, I've noticed a couple of interesting points: * Mathematica has different symbols for `Cross' and `Times'. Both look like a cross, but one of them is a little smaller and is assigned a different function. TeX doesn't make this distinction and reserves only one slot for `\times'. Do we need another one? * Mathematica has different symbols for `And' and `Wedge' and for `Or' and `Vee'. The `Wedge' and `Vee' symbols are a little smaller than `And' and `Or' and don't have a predefined meaning as a function (only a syntactic meaning as a binary operator). Again, TeX treats both as the same and just assigns different names to the same symbol. Do we need two more slots? * Mathematica has three different sets of single and double vertical bars, for use as left or right delimiters or as vertical separator in between symbols. The extension font Math2 contains 3 sets of 4 sizes each, but they all share the same extension module. I guess we can avoid this case in TeX since the symbols all look the same and the spacing could be handled by different methods, or am I missing something? Opinions? Cheers, Ulrik.

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