A Polynomial Invariant Of Twisted Graph Diagrams

Details A Polynomial Invariant Of Twisted Graph Diagrams A Polynomial Invariant Of Twisted Graph Diagrams

2007-06-19

arxiv.org/abs/0706.2854v1

Mathematics

Geometric Topology

22 pages

Scientific paper

Twisted graph diagrams are virtual graph diagrams with bars on edges. A
bijection between abstract graph diagrams and twisted graph diagrams is
constructed. Then a polynomial invariant of Yamada-type is developed which
provides a lower bound for the virtual crossing number of virtual graph
diagrams.

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