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Quantum groups, skein theories, operadic and diagrammatic algebra, quantum field theory

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Action of Co-quasi-triangular Universal r-form on $a \otimes 1$

Like David said, the proof is almost identical to the earlier one for $R$-matrices: $r(x\otimes 1) = r\circ (id\otimes\mu)(x\otimes 1\otimes 1) = (r_{13}\ast r_{12})(x\otimes 1\otimes1)= \sum r(x'\ot …
Scott Kovach's user avatar