## Abstract Only recently have techniques been introduced that apply design theory to construct graphs with the __n__βe.c. adjacency property. We supply a new random construction for generating infinite families of finite regular __n__βe.c. graphs derived from certain resolvable Steiner 2βdesigns.
On an adjacency property of graphs
β Scribed by Geoffrey Exoo
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 374 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
A graph G has property A(m, n, k) if for any sequence of m + n distinct points of G, there are at least k other points, each of which is adjacent to the first m points of the sequence but not adjacent to any of the latter n points. the minimum order among all graphs with property A(m, n, k) is denoted a(m, n, k). Bounds are given on the numbers a(m, n, k) and some exact results are indicated.
π SIMILAR VOLUMES
If in a plane graph with minimum degree 2 3 no t w o triangles have an edge in common, then: (1 there are two adjacent vertices with degree sum at most 9, and (2) there is a face of size between 4 and 9 or a 10-face incident with ten 3-vertices. It follows that every planar graph without cycles betw
A directed graph G with a source s and a sink r is called a p-graph if every edge of G belongs to an elementary (s,r)-path of G. If C is a cycle of the p-graph G then a cyclic cover of C is a set of (s,r)-paths of G that contains all the edges of C. A cyclic cover Q is minimal if for
The conjecture on acyclic 5-choosability of planar graphs [Borodin et al., 2002] as yet has been verified only for several restricted classes of graphs. None of these classes allows 4-cycles. We prove that a planar graph is acyclically 5-choosable if it does not contain an i-cycle adjacent to a j-cy