English

On the intersection of infinite matroids

Combinatorics 2012-07-10 v2

Abstract

We show that the infinite matroid intersection conjecture of Nash-Williams implies the infinite Menger theorem proved recently by Aharoni and Berger. We prove that this conjecture is true whenever one matroid is nearly finitary and the second is the dual of a nearly finitary matroid, where the nearly finitary matroids form a superclass of the finitary matroids. In particular, this proves the infinite matroid intersection conjecture for finite-cycle matroids of 2-connected, locally finite graphs with only a finite number of vertex-disjoint rays.

Keywords

Cite

@article{arxiv.1111.0606,
  title  = {On the intersection of infinite matroids},
  author = {Elad Aigner-Horev and Johannes Carmesin and Jan-Oliver Fröhlich},
  journal= {arXiv preprint arXiv:1111.0606},
  year   = {2012}
}

Comments

17 pages, 1 figure, submitted

R2 v1 2026-06-21T19:29:55.177Z