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Results tagged with seifert-surfaces
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user 13767
Surfaces bounding a knot or a link.
3
votes
Is there a notion of "ribbon 2-category"?
I'm currently trying to work out the details. Here is how far I got:
Pivotal categories
You can do graphical calculus on $\mathbb{R}^2$ with monoidal categories.
Boxes represent morphisms, lines ar …
- 5,565
4
votes
1
answer
430
views
How disconnected can a Seifert surface be?
Seifert surfaces
The standard definition of a Seifert surface for a link in $S^3$ is an oriented, compact surface embedded in $S^3$, bounding the link. Often, it is assumed to be connected, but given …
- 5,565