If rjn Γ 1 and rn is even, then K n can be expressed as the union of t nΓ1 r edgedisjoint isomorphic r-regular r-connected factors.
P4-decompositions of regular graphs
β Scribed by Heinrich, Katherine; Liu, Jiping; Yu, Minli
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 246 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
β¦ Synopsis
In this article, we show that every simple r-regular graph G admits a balanced P 4 -decomposition if r β‘ 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)| β‘ 0(mod 3) by characterizing graphs of maximum degree 4 that admit a triangle-free Eulerian tour.
π SIMILAR VOLUMES
Let Ξ be a regular graph with n vertices, diameter D, and d + 1 In a previous paper, the authors showed that if P (Ξ») > n -1, then D β€ d -1, where P is the polynomial of degree d-1 which takes alternating values Β±1 at Ξ» 1 , . . . , Ξ» d . The graphs satisfying P (Ξ») = n -1, called boundary graphs, h
with β¦ G G V r2 q 10 h V log V , and h y 1 divides E , then there is a decomposition of the edges of G into copies of H. This result is asymptotically the best possible for all trees with at least three vertices.
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 Βͺ Ο±. This equivalence of two sequences of probabilistic spaces, called contiguity, occurs when all events almo
This report considers the resistance distance as a recently proposed new ## Ε½ . intrinsic metric on molecular graphs, and in particular, the sum R over resistance distances between all pairs of vertices is considered as a graph invariant. It has been vertices and K denotes a complete graph contai