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2.4 Symmetries, the pentagon and the hexagon relations

Summary. Here we discuss some relations between the generators $ \MobiusSymbol$ and $ \tetrahedron$ of KTG and show that they are equivalent to Drinfel'd's pentagon and hexagon relations [Dr1,Dr2]. For now, see [BN7, handout].



Dror Bar-Natan 2001-07-23