2次元タングル
2次元(余次元2)のタングル:
- John C. Baez, Laurel Langford "Higher-Dimensional Algebra IV: 2-Tangles"→http://citeseer.ist.psu.edu/342936.html (64Pある)
- John C. Baez, Laurel Langford "2-Tangles"→http://arxiv.org/abs/q-alg/9703033
- Laurel Langford "2-Tangles as a Free Braided Monoidal 2-Category with Duals (1997) "→http://citeseer.ist.psu.edu/140678.html