A knotted 2-dimensional foam with non-trivial cocycle invariant

Abstract

By 2-twist-spinning the knotted graph that represents the knotted handlebody $5_2$, we obtain a knotted foam in 4-dimensional space with a non-trivial quandle cocycle invariant.

14 pages and lots of very nice figures. To appear RIMS publications proceedings of the conference on Intelligence of Low Dimensional Topology 2012

Cited by in corpus (1)

• Twist Spinning Knotted Trivalent Graphs