English

Minimum edge cuts of distance-regular and strongly regular digraphs

Combinatorics 2017-02-07 v1

Abstract

In this paper, we show that the edge connectivity of a distance-regular digraph Γ\Gamma with valency kk is kk and for k>2k>2, any minimum edge cut of Γ\Gamma is the set of all edges going into (or coming out of) a single vertex. Moreover we show that the same result holds for strongly regular digraphs. These results extend the same known results for undirected case with quite different proofs.

Keywords

Cite

@article{arxiv.1702.01253,
  title  = {Minimum edge cuts of distance-regular and strongly regular digraphs},
  author = {S. Ashkboos and G. R. Omidi and F. Shafiei and K. Tajbakhsh},
  journal= {arXiv preprint arXiv:1702.01253},
  year   = {2017}
}

Comments

9 pages, 1 figure

R2 v1 2026-06-22T18:09:16.619Z