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emptyset symbols





hello,

There are two empty set symbols in cmr10 in position '034 and '037.

Does anybody know if they are used in math documents.

the default \emtyset you get when you type \emtyset comes from cmsy.

Ams propose a varemptyset !

Which should be kept ?
Which should be trown out ?
Or should we keep them all for compatibility ?


JZ