𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The 2-extendability of strongly regular graphs

✍ Scribed by Dingjun Lou; Qingwei Zhu


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
362 KB
Volume
148
Category
Article
ISSN
0012-365X

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Distance regular graphs of diameter 3 an
✍ A.E Brouwer πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 124 KB

In [1] N.L. Biggs mentions two parameter sets for distance regular graphs that are antipodal covers of a complete graph, for which existence of a corresponding graph was unknown. Here we settle both cases by proving that one does not exist, while there are exactly two nonisomorphic solutions to the

New families of strongly regular graphs
✍ Yury J. Ionin; Hadi Kharaghani πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 English βš– 116 KB

## Abstract We apply symmetric balanced generalized weighing matrices with zero diagonal to construct four parametrically new infinite families of strongly regular graphs. Β© 2003 Wiley Periodicals, Inc. J Combin Designs 11: 208–217, 2003; Published online in Wiley InterScience (www.interscience.wil

Second neighbourhoods of strongly regula
✍ A.D. Gardiner; C.D. Godsil; A.D. Hensel; Gordon F. Royle πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 English βš– 723 KB

## Some antipodal distance-regular graphs of diameter three arise as the graph induced by the vertices at distance two from a given vertex in a strongly regular graph. We show that if every vertex in a strongly regular graph G has this property, then G is the noncollinearity graph of a special typ

Strongly Regular Square-free Graphs with
✍ Benjamin V.C. Collins πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 English βš– 277 KB

By a square in an undirected graph ⌫ , we mean a cycle x , y , z , w such that x is not adjacent to z and y is not adjacent to w . Suppose that ⌫ is a strongly regular graph with ϭ 2 , and assume that ⌫ does not contain a square . Pick any vertex x of ⌫ and let ⌫ Ј denote the induced subgraph on the

Embeddings of Un(q2) and symmetric stron
✍ Antonio Cossidente πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 101 KB

## Abstract In the geometric setting of the embedding of the unitary group __U__~__n__~(__q__^2^) inside an orthogonal or a symplectic group over the subfield __GF__(__q__) of __GF__(__q__^2^), __q__ odd, we show the existence of infinite families of transitive two‐character sets with respect to hy