Dror Bar-Natan: Talks: Wayne-031103: | (6) |
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Borrowed from Quandle Cohomology and State-sum Invariants of Knotted Curves and Surfaces, by J. Scot Carter, Daniel Jelsovsky, Seiichi Kamada, Laurel Langford and Masahico Saito, arXiv:math.GT/9903135.