A digraph with n vertices and fixed outdegree m is generated randomly so that each such digraph is equally likely to be chosen. We consider the probability of the existence of a Hamiltonian cycle in the graph obtained by ignoring arc orientation. We show that there exists m (~23) such that a Hamilto
Limit distribution for the existence of hamiltonian cycles in a random graph
✍ Scribed by János Komlós; Endre Szemerédi
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 874 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
✦ Synopsis
P&a proved that a random graph with clt log n edges is Hamiltonian with probability tending to 1 if c >3. Korsunov improved this by showing that, if Gn is a random graph with *n log n + in log log n + f(n)n edges and f(n) --*m, then G" is Hamiltonian, with probability tending to 1. We shall prove that if a graph G" has n vertices and $n log n + in log log n + cn edges, then it is Hamiltonian with probability PC tending to exp exp(-2) as n -+ 00. 0.1. In his paper [l] Lajos P&a proves that a random graph with n vertices and f(n) = cn log n edges contains a Hamiltonian cycle with a probability approaching 1 (as n 300).
📜 SIMILAR VOLUMES
The asymptotic distribution of the number of cycles of length l in a random r-regular graph is determined. The length of the cycles is defined as a function of the Ž . Ž . number of vertices n, thus l s l n , and the length satisfies l n ª ϱ as n ª ϱ. The limiting Ž . Ž . distribution turns out to
## Abstract We consider the problem of the minimum number of Hamiltonian cycles that could be present in a Hamiltonian maximal planar graph on __p__ vertices. In particular, we construct a __p__‐vertex maximal planar graph containing exactly four Hamiltonian cycles for every __p__ ≥ 12. We also pro
Let a random graph G be constructed by adding random edges one by one, starting with n isolated vertices. We show that with probability going to one as n goes to infinity, when G first has minimum degree two, it has at least (log n)('-')" distinct hamilton cycles for any fixed E > 0.
It is a simple fact that cubic Hamiltonian graphs have at least two Hamiltonian cycles. Finding such a cycle is NP-hard in general, and no polynomial-time algorithm is known for the problem of finding a second Hamiltonian cycle when one such cycle is given as part of the input. We investigate the co