In this paper the expectation and variance of the number of 2-factors in random r-regular graphs for any fixed r 2 3 is analyzed and the asymptotic distribution of this variable is determined.
1-Factorizations of random regular graphs
โ Scribed by M. S. O. Molloy; H. Robalewska; R. W. Robinson; N. C. Wormald
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 204 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1042-9832
No coin nor oath required. For personal study only.
โฆ Synopsis
It is shown that for each r G 3, a random r-regular graph on 2 n vertices is equivalent in a certain sense to a set of r randomly chosen disjoint perfect matchings of the 2 n vertices, as n ยช ฯฑ. This equivalence of two sequences of probabilistic spaces, called contiguity, occurs when all events almost sure in one sequence of spaces are almost sure in the other, and vice versa. The corresponding statement is also shown for bipartite graphs, and from this it is shown that a random r-regular simple digraph is almost surely strongly ลฝ .
๐ SIMILAR VOLUMES
In this article, we show that every simple r-regular graph G admits a balanced P 4 -decomposition if r โก 0(mod 3) and G has no cut-edge when r is odd. We also show that a connected 4-regular graph G admits a P 4 -decomposition if and only if |E(G)| โก 0(mod 3) by characterizing graphs of maximum degr
For a positive integer d, the usual d-dimensional cube Q d is defined to be the graph (K 2 ) d , the Cartesian product of d copies of K 2 . We define the generalized cube Q(K k , d) to be the graph (K k ) d for positive integers d and k. We investigate the decomposition of the complete multipartite
A graph is called K1,.-free if it contains no K l , n as an induced subgraph. Let n ( r 3), r be integers (if r is odd, r 2 n -1). We prove that every Kl,,-free connected graph G with rlV(G)I even has an r-factor if its minimum degree is at least This degree condition is sharp.