𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Proof of a conjecture on cycles in a bipartite graph

✍ Scribed by Wang, Hong


Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
244 KB
Volume
31
Category
Article
ISSN
0364-9024

No coin nor oath required. For personal study only.

✦ Synopsis


It was conjectured in [Wang, to appear in The Australasian Journal of Combinatorics] that, for each integer k β‰₯ 2, there exists

. This conjecture is also verified for k = 2, 3 in [Wang, to appear; Wang, manuscript]. In this article, we prove this conjecture to be true if n β‰₯ 3k, i.e., M (k) ≀ 3k. We will also show that, if n β‰₯ 3k, then for any k independent edges e 1 , . . . , e k of G, there exist k vertex-disjoint cycles C 1 , . . . , C k of length at most 6 in G such that e i ∈ E(C i ) for all i ∈ {1, . . . , k}.


πŸ“œ SIMILAR VOLUMES


On 2-factors of a bipartite graph
✍ Wang, Hong πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 191 KB πŸ‘ 1 views

In this article, we consider the following problem: Given a bipartite graph G and a positive integer k, when does G have a 2-factor with exactly k components? We will prove that if , then, for any bipartite graph H = (U 1 , U 2 ; F ) with |U 1 | ≀ n, |U 2 | ≀ n and βˆ†(H) ≀ 2, G contains a subgraph i

On a conjecture of Aris: Proof and remar
✍ Dan Luss; Neal R. Amundson πŸ“‚ Article πŸ“… 1967 πŸ› American Institute of Chemical Engineers 🌐 English βš– 428 KB πŸ‘ 1 views
A short proof of a theorem on Hamiltonia
✍ Ainouche, A. πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 219 KB πŸ‘ 2 views

In this note, w e give a short proof of a stronger version of the following theorem: Let G be a 2-connected graph of order n such that for any independent set {u, u , w}, then G is hamiltonian. 0 1996 John

Cycles in a graph whose lengths differ b
✍ Bondy, J. A.; Vince, A. πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 116 KB πŸ‘ 2 views

Several problems concerning the distribution of cycle lengths in a graph have been proposed by P. ErdΓΆs and colleagues. In this note two variations of the following such question are answered. In a simple graph where every vertex has degree at least three, must there exist two cycles whose lengths d