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Day 0 Clip 3

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Videography by Sam Selmani troubleshooting

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0:34:14 [add] Khovanov's theorem on Khovanov homology.
0:34:25 [add] Invariance of the groups themselves.
1:07:08 [add] The constraints on $m$ and $\Delta$.
1:16:28 [add] Cancellations in complexes.
1:16:31 [add] Cancellations in complexes (2).