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June 13 Clip 2

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Videography by Karene Chu troubleshooting

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0:06:16 [add] The Yang-Baxter elements.
0:37:22 [add] The four commutative diagrams for $\beta$-calculus.
1:06:56 [add] Example: Computing the virtual trefoil.
1:21:37 [add] The origin of the terms in the swap formula.