## Abstract A cyclic face 2βcolourable triangulation of the complete graph __K__~__n__~ in an orientable surface exists for __n__ββ‘β7 (mod 12). Such a triangulation corresponds to a cyclic biβembedding of a pair of Steiner triple systems of order __n__, the triples being defined by the faces in eac
On S-cyclic steiner systems
β Scribed by Immo Diener
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 988 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
In this paper we investigate the structlrlre of S-cyclic Steiner quadruple systems and derive a necessary condition on their existence which might turn out to be sufficient. In the third chapter we prove a necessary condition on the existence of general S-cyclic Steiner systems. It turns out that S-cyclicity is a very restrictive property that hardly any systems with t# 3 can have.
π SIMILAR VOLUMES
In this article, we present a direct construction for cyclically resolvable cyclic Steiner 2-designs which is applicable irrespective of the parity of the block size. As an example, by using Weil's theorem on character sums, this construction gives an infinite series of cyclically resolvable cyclic
This paper gives some recursive constructions for cyclic 3-designs. Using these constructions we improve Grannell and Griggs's construction for cyclic Steiner quadruple systems, and many known recursive constructions for cyclic Steiner quadruple systems are unified. Finally, some new infinite famili
Siemon, H., On the existence of cyclic Steiner Quadruple Systems SQS(2p), Discrete Mathematics 97 (1991) 377-385. Subsequent to Kohler's result in [l], Satz 8, we show that strictly cyclic SQS(2p), p prime number and p = 53, 77 ( 120) exist if a certain number theoretic claim can be proved. We verif
For definitions and preliminary results see also Section 2. ' See Section 3.1. ' For the convenience of the reader we repeat here the argument of the proof of Theorem 1 in with 2p a instead of 2 5".