English

Zero $A$-paths and the Erd\H{o}s-P\'osa property

Combinatorics 2020-10-05 v1

Abstract

Let Γ\Gamma be an Abelian group. In this paper I characterize the AA-paths of weight 0Γ0\in\Gamma that have the Erd\H{o}s-P\'osa property. Using this in an auxiliary graph, one can also easily characterize the AA-paths of weight γΓ\gamma\in\Gamma that have the Erd\H{o}s-P\'osa property. These results also extend to long paths, that is paths of some minimum length. A structural result on zero walls with non-zero linkages will be proven as a means to prove the main result of this paper. This immediately implies that zero cycles with respect to an Abelian group Γ\Gamma have the Erd\H{o}s-P\'osa property.

Keywords

Cite

@article{arxiv.2010.00663,
  title  = {Zero $A$-paths and the Erd\H{o}s-P\'osa property},
  author = {Arthur Ulmer},
  journal= {arXiv preprint arXiv:2010.00663},
  year   = {2020}
}