リボングラフとか絡み目とかタングルとか

また、バエズの記事から：

• http://golem.ph.utexas.edu/category/2009/04/kamnitzer_on_categorifying_tan.html

• Title:Ribbon graphs and their invariants derived from quantum groups
• Authors: N. Yu. Reshetikhin and V. G. Turaev
• Source: Comm. Math. Phys. Volume 127, Number 1 (1990), 1-26.
• URL: http://projecteuclid.org/DPubS?service=UI&version=1.0&verb=Display&handle=euclid.cmp/1104180037
• URL PDF: http://projecteuclid.org/DPubS/Repository/1.0/Disseminate?view=body&id=pdf_1&handle=euclid.cmp/1104180037
• Pages: 26

• Title: Knot homology via derived categories of coherent sheaves I, sl(2) case
• Authors: Sabin Cautis, Joel Kamnitzer
• URL: http://arxiv.org/abs/math/0701194
• Pages: 53

これの続き（II）は、

• http://arxiv.org/abs/0710.3216