English

On Tutte cycles containing three prescribed edges

Combinatorics 2024-12-30 v2

Abstract

A cycle CC in a graph GG is called a Tutte cycle if, after deleting CC from GG, each component has at most three neighbors on CC. Tutte cycles play an important role in the study of Hamiltonicity of planar graphs. Thomas and Yu and independently Sanders proved the existence of Tutte cycles containining three specified edges of a facial cycle in a 2-connected plane graph. We prove a quantitative version of this result, bounding the number of components of the graph obtained by deleting a Tutte cycle. As a corollary, we can find long cycles in essentially 4-connected plane graphs that also contain three prescribed edges of a facial cycle.

Keywords

Cite

@article{arxiv.2106.09617,
  title  = {On Tutte cycles containing three prescribed edges},
  author = {Michael C. Wigal and Xingxing Yu},
  journal= {arXiv preprint arXiv:2106.09617},
  year   = {2024}
}

Comments

14 pages, 1 figure

R2 v1 2026-06-24T03:19:24.620Z