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Oct 22, 2010 at 3:52 comment added Theo Johnson-Freyd This isn't too surprising. Fusion categories are something like representation theories of finite groups. And for finite groups, the center really is some sort of "squaring" --- "Drinfel'd center" also goes by the name "Drinfel'd double" for a reason.
Oct 21, 2010 at 14:48 history answered Justin Greenough CC BY-SA 2.5