Two Steiner triple systems, S 1 VY B 1 and S 2 VY B 2 , are orthogonal (S 1 c S 2 ) if B 1 B 2 Y and if fuY vg T fxY yg, uvwY xyw P B 1 , uvsY xyt P B 2 then s T t. The solution to the existence problem for orthogonal Steiner triple systems, (OSTS) was a major accomplishment in design theory. Two or
Continuity of Mendelsohn and Steiner triple systems
β Scribed by M.J. Grannell; T.S. Griggs; J.S. Phelan
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 338 KB
- Volume
- 138
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
By adopting a functional viewpoint of Mendelsohn and Steiner triple systems, questions of continuity are investigated. The main result is that at most one section ofa Steiner triple system defined on the real line can be continuous. Applying the concept of continuity to finite systems a complete characterization of continuous, finite Mendelsohn and Steiner triple systems is obtained.
π SIMILAR VOLUMES
## Abstract In this paper, we present a conjecture that is a common generalization of the DoyenβWilson Theorem and Lindner and Rosa's intersection theorem for Steiner triple systems. Given __u__, __v__ β‘ 1,3 (mod 6), __u__ < __v__ < 2__u__β+β 1, we ask for the minimum __r__ such that there exists a
A Steiner triple system S is a C-ubiquitous (where C is a configuration) if every line of S is contained in a copy of C, and is n-ubiquitous if it is C-ubiquitous for every n-line configuration C. We determine the spectrum of 4-ubiquitous Steiner triple systems as well as the spectra of C-ubiquitous
## Abstract It is proved in this article that the necessary and sufficient conditions for the embedding of a Ξ»βfold pure Mendelsohn triple system of order __v__ in Ξ»β__fold__ pure Mendelsohn triple of order __u__ are Ξ»__u__(__u__ β 1) β‘ 0 (mod 3) and __u__ β©Ύ 2__v__ + 1. Similar results for the embe
A cyclic triple (a, b, c) is defined to be set { (a, b) ,(b,c),(c,a)} of ordered pairs. A Mendelsohn triple system of order v, M(2,3, u), is a pair (M, fi), w h ere M is a set of u points and fi is a collection of cyclic triples of pairwise distinct points of M such that any ordered pair of distinct
In this article it is shown that any resolvable Mendelsohn triple system of order u can be embedded in a resolvable Mendelsohn triple system of order v iff v 2 3u, except possibly for 71 values of (u,v). 0 1993 John Wiley & Sons, Inc. ## Theorem 1.1. A RMTS(v) exists if and only if If ( X , % ) a