English

The Intersection problem for 2-(v; 5; 1) directed block designs

Combinatorics 2012-07-17 v1

Abstract

The intersection problem for a pair of 2-(v, 3, 1) directed designs and 2-(v, 4, 1) directed designs is solved by Fu in 1983 and by Mahmoodian and Soltankhah in 1996, respectively. In this paper we determine the intersection problem for 2-(v, 5, 1) directed designs.

Cite

@article{arxiv.1207.3400,
  title  = {The Intersection problem for 2-(v; 5; 1) directed block designs},
  author = {Nasrin Soltankhah and somaye ahmadi},
  journal= {arXiv preprint arXiv:1207.3400},
  year   = {2012}
}

Comments

17 pages. To appear in Discrete Math

R2 v1 2026-06-21T21:35:33.573Z