English

Bisected vertex leveling of plane graphs: braid index, arc index and delta diagrams

Geometric Topology 2018-06-27 v1

Abstract

In this paper, we introduce a bisected vertex leveling of a plane graph. Using this planar embedding, we present elementary proofs of the well-known upper bounds in terms of the minimal crossing number on braid index b(L)b(L) and arc index α(L)\alpha(L) for any knot or non-split link LL, which are b(L)12c(L)+1b(L) \leq \frac{1}{2} c(L) + 1 and α(L)c(L)+2\alpha(L) \leq c(L) + 2. We also find a quadratic upper bound of the minimal crossing number of delta diagrams of LL.

Keywords

Cite

@article{arxiv.1806.09719,
  title  = {Bisected vertex leveling of plane graphs: braid index, arc index and delta diagrams},
  author = {Sungjong No and Seungsang Oh and Hyungkee Yoo},
  journal= {arXiv preprint arXiv:1806.09719},
  year   = {2018}
}